You've got a couple of answers already but I guess another can't hurtdream said:Ratchet and Clank A Crack In Time is a fantastic game. And I say that as someone who thought he was bored to death of that franchise before buying it during the last EB sale.
Is White Knight Chronicles any good? I mean, I know it's 5 bucks but...you know.
I enjoyed the game. It was pretty mediocre over all: the story was nothing special, the characters were kind of lame, the battle system was too slow, and I never needed to use anything in battle beyond the standard attack, a heal spell, and transforming for the big guys...but there was just something about the game that kept me going. I finished it up without feeling like I just wanted to get the damn thing done with already.
I also thought the dungeon design (with the exception of the last dungeon) was very well done.
Certainly worth more than $5 if you ask me.
-Edit- Oh, and I tried going online a few months ago and that aspect of the game may as well be considered dead. What people were still playing online were of such a high rank that a newbie like myself couldn't do a damn thing.