I have nothing better to do at 4:30am, so I'll individually rate all of the apps I bought so far so others can use it as some type of reference.
Galcon - 9/10 - Fucking awesome multiplayer fast-paced strategy game. It's like Risk, only each game lasts about 3 minutes instead of 3 hours.
BeejiveIM - 8.5/10 - The best mobile IM application. I use it for AIM. It keeps logs, allows for landscape typing, but most importantly has an absolutely phenomenal GUI. If you do a lot of mobile IMing, it's worth the steep price tag.
Band - 6/10 - It's fun for dicking around. A simple program that has a fun drum pad, drum machine, shitty bass, piano, and a 12-bar blues thing.
Piano - 7/10 - If you play piano and want a piano on your iPhone, this is probably your best bet. Multitouch up to 5 different notes, but it only displays one octave at a time.
iTap - 7.5/10 - iTap turns your iPhone into a Macbook touch pad for your PC. It uses all the same swipes and stuff. A triple-finger swipe brings up a keyboard which has a few extra useful keys, like Esc and the arrows.
Google Earth - 8/10 - Laggy, but awesome.
TV Forcast - 6/10 - If you're like me and only watch a few different TV shows, this app tells you exactly when they're on and if it's a new episodes. A nice looking GUI, and good for its purposes.
Tap Tap Revenge NIN Edition - 8/10 - The note charts aren't too bad. It can get laggy, though. There are only 5 songs on Expert level, which is a bummer because the game is really easy. Not worth 10 bucks unless you're a NIN fan.
Fieldrunners - 9/10 - This is an awesome Tower Defense game. Instead of having a set path the enemies travel along, they free-roam and avoid your weapons that you set up. You can guide them around and make your own level this way. It's a lot of fun, but once beaten completely, gets kind of old.
Cubie - 8/10 - A fantastic Rubix Cube clone that uses swipe and multitouch gestures perfectly.
Fake Call - 6/10 - A cheap application that makes your phone appear like you're receiving a call. It's useful for getting yourself out of a lame conversation with someone, or getting a quick laugh. (Like when Mark Summers decided to call me.)
iPint - 7/10 - The best "beer" app. It's no longer available in the US, though. It's free, and fluid. (No pun intended.) Much better than that other shitty one. Even though these are the types of apps killing the App Store, they're still fun at parties and impressing non-iPhone owners.
Dial Zero - 7.5/10 - This is a nifty app which catalogs all of the toll-free phone numbers to major businesses and gives instructions with each number on how to instantly reach an operator or customer service agent.
Monkey Ball - 7/10 - Nice graphics, great sound, awesome level design, fucking awful controls. By far the worst controls of a Monkey Ball yet, even compared against the GBA version. Still, if you can get used to them (somehow), it's really, really fun.
X-Plane - 9.5/10 - A simply phenomenal flight simulator. The controls are responsive and accurate, the graphics are the best on the iPhone, and with the new updates, there are plenty of options to customize your flight. If you like flight sims, BUY THIS GAME.
More Cowbell - 4/10 - A dumb little app that turns your iPhone into a cowbell. The only reason I keep this on my phone is because when I went to Applebee's once with some friends, Don't Fear The Reaper came on and comedy gold was created.
Kroll - 7/10 - It's a fun little 2-D side-scroller beat-em-up game. I got bored pretty quickly and haven't spent much time with it.
Cro Mag - 7.5/10 - It's a cheap and fun racing game. Nothing fantastic, but it's not expensive. Think Mario Kart if it was stripped of all its fanciness.
BeatMaker - 8.5/10 - A sweet sequencer program. Tons of sound samples. It's a really robust program, but it's a bit expensive. It's not for the average user.
Bloom - 8/10 - This is a simple little music-ish program... You tap the screen and it makes colors and sounds, lol. It reminds me of Electroplankton. It's tough to explain, but it'll keep you busy for a little while.
Scrabble - 8.5/10 - It's a scrabble port, and a good one at that. It's got great controls and variant levels of difficulty. No online play, though.
Tetris - 8/10 - It's Tetris by the Tetris Company. Meh. Could be better, could be worse. But Tetris is almost a necessity on any phone, and this is the best one on the iPhone. (Yeah, slightly better than Tris, or whatever it was called.)
AdrPool - 8.5/10 - It's billiards action with ONLINE PLAY and full chat! It's about as good as any other top-down pool game you've ever played before. There are a few different modes. It's worth a purchase.
Enigmo - 8.5/10 - This is a sweet little puzzle game. It reminds me of The Incredible Machine. Also tough to explain. YouTube it.
AquaForest - 8/10 - I love this app. It's a mini physics sandbox with water, fire, and other various objects. The only downside is it suffers from tremendous slowdown with a lot on the screen.
Guitar - 6/10 - A guitar app. It's different in the sense that there are preset chords instead of holding down individual strings. Meh.
i.TV - 7/10 - See what's on TV. This is a full TV guide. Kind of a slow-moving GUI. It's pretty informative, though.
CameraBag - 5/10 - Allows you to change your photos and give them different looks, like an old 50's black and white look, or infrared look. It's pretty dumb.
Pyro Mania! - 7/10 - Like BLOOM, this app lets you tap random parts of the screen, only instead of random sounds, it's firework explosions. It's fun to mess around in and draw little paths for rockets to travel around on.
Toy Bot Diaries - 8/10 - This is a decent platformer with some nice controls. It's slow-moving and is heavily puzzle-based. Check it out on YouTube to see what I mean.
Pinball RC - 6.5/10 - An average pinball game.
Tunnels - 4/10 - A dumb little "follow the path" game. I think it was free, though.
MazeFinger - 6/10 - Visually, it's pretty nice. Basically, you just drag your finger across a maze on screen and try to get to the end before your timer runs out. It was pretty awesome for like 5 minutes, then got super boring.
Missile Command - 7/10 - This is both a classic and modern version of Missile Command. My only gripe is that it's tough to be pixel-accurate using your finger on the touch screen. Also, the new "modern" mode is kinda weak. Old-school is where it's at.
Are You Smarter Than a 5th Grader? - 5/10 - Not if you bought this app.
Labyrinth (Full Version) - 8/10 - This is an awesome marble game, just like the classic wooden labyrinth puzzles you played with as a kid. The full version has hundreds of maps, and a crazy range of difficulty. I love this app.
Guitar Rock Tour - 8/10 - A blatant Guitar Hero/Rock Band ripoff. The presentation is phenomenal, and all the tracks are master recordings (I think.) The note charts are pretty good, but the drums are kinda weak. This game does suffer from some input lag issues and crashes pretty easily. Play it in airplane mode to reduce lag and crashes. Still, it's pretty fun, and a bit better than Tap Tap Revenge.
Dic-tion-ar-y - 7.5/10 - A full-fledged dictionary. It even has a voice option that speaks the word for you. "Motherfucker" is a particularly funny one in the middle of class.
Big Over - 5/10 - A robust cook book for your iPhone. A pretty shitty GUI, though. And it searches everything online, so you might as well just hit up food.com instead.
iChoose - 6/10 - A coin flip app for your iPhone. I actually use this all the damn time because I'm a pretty indecisive person, and I always trust the coin. For most people, though, it'd be pretty dumb.
Level - 5/10 - This is a level for your phone. It has calibration, but I can't honestly ever see myself finding a true use for this besides showing my technologically-gimped dad how my iPhone can be a sweet tool.
iChalky - 3/10 - This app is so stupid. A little stick figure bounces around on your screen. You can sort of drag him around, but it never really does what you want it do. Even with the ability to put the face of my fat friend Dean on it and wrecklessly shake my iPhone around didn't help the cause.
rRootage - 6.5/10 - It's a vertical shooter with automatic shooting. Not really challenging, nor is it all that fun. Touch-screen shooters rarely are.
Pac-Man and Ms. Pac-Man - 8/10 Pac-Man is a must have on any phone, and this is a port of a actual arcade version. There are three types of controls, but "swipe" is where it's at. This really is a fantastic Pac-Man port and totally worth the money.
Asphalt4 - 7/10 - It's a terrific looking game. Simply awesome iPhone graphics. The controls aren't terrible, but no racing game on the iPhone has got them down perfectly, yet. I suppose it's probably the best racer on the iPhone so far, but nothing incredible.
Neverputt - 7.5/10 - This is a pretty fun mini golf game. Decent controls, but only 18 holes. I really wish they would add more, because I've played the original 18 about 20 times.
Bubble Bash - 8/10 - It's Puzzle Bobble. It's got a great presentation and makes terrific use of the touch screen, allowing multiple ways to control the game. Great colors, fun music. It's a good buy.
MotoChaser - 7/10 - Another racing game, this time on motocross bikes. I haven't played a lot with this, but I remember it being... like the other racing games.
Big Bang Board Games - 7.5/10 - Connect 4, Chess, Checkers, Reversi, Backgammon, and more. No multiplayer, though.
PocketGuitar - 7/10 - The best guitar app available. Control each individual string, then strum your chord. Don't expect to make real music out of this, but it is fun to mess around in.
WinAdmin - 9.5/10 - An absolutely fantastic Remote Desktop utility for the iPhone. This is the reason to own an iPhone, in my opinion. It's your own person desktop in the palm of your hands at any time. It even works pretty decent on the Edge network. It runs smooth, has great zooming, easy keyboard, Ctrl-Alt-Delete, and good mouse controls. No complaints at all. It's a must own for anyone who has a need or desire to access their desktop at will.
Those are all the apps I have for now. Actually, I had a ton more, but they've since been uninstalled. I hope this helps people out.