If you have an iPhone go get the app MW2 Titles & Emblems. (Not the piece of crap MW2 app that is in the top 50 right now.)
It's the only app that allows you to check off which emblems and titles you have and need. It also shows you exactly what you have to do to get the emblem. Not just "Complete Group Hug Challenge"
It tells you "Complete Group Hug Challenge: Kill multiple enemies with a semtex grenade stuck to one of them." It also shows you what title you will unlock when you complete that challenge. I emailed the guy who made the app with some suggestions and he told me there is an update coming in a week or two with some great new features:
"Here are the other features coming in the next version (hopefully sometime next week):
* Unlocking a title will automatically unlock any corresponding emblems (and vice versa)
* Shows number you have unlocked versus locked with a percentage, something like 285/570 (50%)
* You can enter your current rank and prestige level
* Based on your rank and prestige it will automatically move titles and emblems you would have unlocked at that level
* Optionally you can turn on a filter that only shows titles and emblems you can possibly unlock at your current level"
The app runs smoothly. It's $1.99 and well worth it. Here's his site with soem screens:
www.willagaroon.com
He's also working on a weapons app with more detailed statistics on all the attachments for the weapon (damage suppression with silencer, etc.)
I know this sounds like an infomercial, LOL, but this app is sick. I use it all day.