I was playing Fall Out New Vegas and while talking to someone, their head starting to tilt slowly to the side. At first I was like, that's a weird expression for what they are saying, but then their head kept going. Slowly, spinning around in a complete circle. Eyes staring at me, piercing into my soul. Then their head returned to normal position after the 360 spin. Neither of us talked of it....I ended the conversation and walked away.

In mafia 2 near the end of the game you exit a highrise building( at the end of a mission) and then it teleports you under the city, I then had to redo the whole mission just for it to happen to me again -_-

Oh man, the FIFA glitches are GOLDEN.

http://www.youtube.com/watch?feature=player_detailpage&v=SICXpE_yS-g#t=43s
http://www.youtube.com/watch?feature=player_detailpage&v=m_EjgOeOqlM#t=14s
http://www.youtube.com/watch?feature=player_detailpage&v=PLB6wzGTMVw#t=32s
http://www.youtube.com/watch?feature=player_detailpage&v=aG0ssk237sw#t=36s

This guy has so many videos of them.

Oh, I've seen a few. Two really stand out. One was in GTA Vice City where I finished a mission after like a dozen tries. I was so happy! I got into a car to go to my save point. A guy ran up to the car, jumped INSIDE of my character, and started driving all over the city. There was a lot of screaming coming from nowhere, too. It was freaky. I wouldn't reset because, whatever that mission was, it was hard as hell. After a whle, the guy got out of my character and the game resumed like nothing had ever happened.

The other happened pretty recently when I was doing a replay of Gears of War 1. I was at the scene where the Kryll were coming out at night. Anyway, in the middle of a firefight, a car just started shaking. I just looked at it. After a while, it started moving forward. Then, it drove up the wall of a building, started flying, and drove off towards the moon!! My kid and I laughed so hard, I had tears coming out of my eyes. That was totlly unexpected!

There was this glitch one time in Fallout New Vegas for the PS3 where the game went over an hour without freezing.

Given past experience this was entirely normal for the game and therefore programed in to shut down one hour in.

This post made my day, already!

I managed to crash Banjo Kazooie: Nuts & Bolts a few times by using my l33t platforming skills to access certain areas in the main hub world before I had unlocked them.

I think the weirdest thing I came across in recent memory was when I got into an online match for MW2 filled with hackers / modders, and the crazy stuff that would ensue, like being able to run super-fast while straffing left or right at an angle (if you simply moved forward or backward you moved at normal speed) and being able to shoot like a thousand rounds per second too.

luckily i never had really bad glitches and i played like ~1000 hours morrowind+oblivion+skyrim!

so yeah, i don't even remember those glitches i had in games, just the usual glitching of many games were you can look through a wall to see what's behind or an enemy in the air after you killed him and boring stuff like that.

What the......that's too well done! The devs must of have wanted that happen, they just made to look like a glitch.