Duh...I'd go for the "can't move" glitch. It would confuse the hell out of everyone that they wouldn't fire at me. Unless they're a scared pussy, then in that case they shouldn't be playing.

Unlimited ammo. I usually die when I run out of ammo halfway through a firefight

If you pick other please state it.

I don't know what Thermal Screen is....explain? I also haven't heard of "Laser out of gun barrel"

Oh god, the unlimited ammo glitch was so fun when it was in matchmaking.  It was some of the most fun I had with MW2.  Getting an AC130 and just destroying the other team was so much fucking fun.  Whole team killed in 2 seconds.  It was really fun.  I wish there was a playlist with that turned on.  I might still be playing MW2.

The javelin thing was great! 
 
Got a  load of hate messages the few weeks before that was patched.

i would still keep the game on my shelf and not touch it

I haven't heard of any of those, what are they?

" i would still keep the game on my shelf and not touch it "

1887's. They are so shitty now.

THe 1887s where so overpowered. Every noob ran around with those thinking he's the pro. If I'd like a glitch back then I take the smoke grenade glitch. It's also extremely annoying but I like the sensation of running very fast :D.

" 1887's. They are so shitty now. "

God post: Explaining all of these glitches and adding a poll.
Great post: Explaining all of these glitches. 
Shit post: Just making a poll.

" @lilman1101: Really? Haven't noticed since all they do now IS GIVE YOU HITMARKERS AT POINT BLANK. "

In my game one bullet kills come only from the UMP.

Infinite care packages god DAMN that was my finest hour with MW2