I've been playing this game for 2 years now, and although I don't play a whole lot, I've gotten around this game and seen every glitch possible in the game. Now most have been fixed, but I think my favorite was the old school chainsaw glitch, where you chainsaw them with your shotty/pistol (although they don't die, they just move like they're getting chainsawed), then run away and no matter where you go, all you gotta do is whip out your lancer and wherever that guy is, he'll suddenly fall to pieces. Great glitch. The most annoying is the crabwalk.

So what is your favorite and most hated glitch?

skydiving is the best, it may take a while but once it happens its awesome

Crabwalking, definitely. I keep running into crabwalkers who move so damn fast I cant hit em worth a damn. Also, host glitchers, who SOMEHOW make it so if you shoot where they appear, it won't do anything. You have to shoot like 10 feet in front of them even at point blank

The tru version i have is the most recent pc Version and i have found the there are very liitle glitches bt the 1 that realy gets in my nerves is at the last battle on the train those bat things attack me in the light.

I picked up yhe PC version myself and the only problem that I'm having with it is that it is laggy even with my PC within spec. Was II supposed to shell out extra for the XFX Card to enjoy the game?

That's the thing about console ports, they don't do scalability well.
It's funny though, Epic said they wanted to create this game for the pc first, consoles second. This seems to be a new trend throughout the industry, especially since ID's announcement.