See for yourself :)

Weirdest in a good way was in Fallout 3. I'm in the town built on an old ship in the harbor (forget the name). I try to pickpocket the waitress, but something went wrong, I think I actually tried to pickpocket the little boy with an attitude instead and got caught. Now, in Fallout 3, you can't kill kids, so I holster my gun and back away. He attacks me, which, because I don't fight back, draws the aggro of everyone around.

So we have this unkillable kid fighting with everyone in the market. Soon all the security forces join in as well. He gets hold of a gun and kills them all. Every single one of them. I then pulled him outside, where he ended up slaughtering the Brotherhood of Steel guys and a few Super Mutants. Pretty awesome.

Bad glitch would be Borderlands 2, in the Angel Core Control level, where Roland gets stuck 3/4ths through the fight and all mobs stop spawning. I'm just wandering around, waiting for more robots to appear, or something, when I notice Roland stuck up in the air. I eventually had to save and quit then continue, so I could do the whole thing over. The sad part is that the boss immediately before this section, BNK-3R or something, got stuck while doing his dying animation, so even though I killed him, I had to do the entire fight over and kill him again. Ugh.

I did play silent hill 2 but never finished it because after seeing pyramid head rape those mannequins as a kid I didn't want to play games for a while. But maybe I can playthrough it now without being creeped the hell out.

Wow I known the kid had problems but I never thought he would go on a killing spree that's one funny glitch, I might go try to make that happen now. And that borderlands 2 one is just horrible, glitches like those make me stop playing games for a while.

Thanks for finding that for me, I always thought there was some kind of easter egg over there. 

Has to be block m' block

Edit: moreover, it would evolve into Khengiskhan if you fed it a Rare Candy.

Weirdest: Infinite free throws in NBA Live '95 for the Genesis. We scored 1001 points and then took a pic! (I wonder where it is...).

Worse: Right now I remember the vanishing chests in God of War 2. In that game the content of some Health and Mana chests disappear when you advance too much. When I find a Health or Mana chest but I'm at 100% I save it for later, but when I come back the chest is open.

Ohh, that's a hard one. I remember seeing some huge glitches that I couldn't believe long ago but I can't recall them.

There was one on Driver where I clipped a police car in a specific way and I ended up on top of a high ride building. There was also one on a Tomb Raider game where I fell through a wall or floor and ended up completing the level in a few minutes.

The funniest glitch was in WoW. We were on a full boat traveling between continents, but the server it was supposed to transfer to was down. It glitched to the inside of a mountain for a little bit before dumping everyone into the ocean at the edge of the map.
Since you can only stay out there in the water for a little while, everyone frantically started to swim back to shore. Nobody made it, people started dropping one by one like flies.
Seeing a whole group of people scrambling to reach safety not willing to accept the inevitable was what made it so funny.

I've seen the BNK-3R one before while farming him for the SMG he drops,  he got stuck on the outer ring running into the edge. Seen him also die on the outer ring and all his drops fall into the abyss below, had that happen 2 fights in a row! And lastly I had him fly straight away from me at the beginning of the fight and just keep going until he dissapeared off screen and just never came back.