[Darko]

Half-Life: Going through the Xen Portal without saving before it and never grabbing the jetpack. I was so pissed I just gave up.

Back the the Future (NES): I wasted 5 bucks renting that piece of crap. It was literally impossible to beat the first level, according to Nintendo Power.

Beating KOTOR light side. What a weak ending. Same for Jedi Academy. At least when the series was about Kyle, the storyline was good.

The new TMNT game. The ending. I don't even think I actually fought Shredder. I think it was Hun in Shredder armor, because before you enter the last stage it has an fmv of hun and shredder talking and Shredder says "You know what you have to do." and Hun says "Yes, master," and walks away. But then you never see Hun again.

Hmmmm.

Halo, playing the last level on legendary, running for the Pelican with my shields down from the turrets on the sides and all the elites that run out, with 1 bar of health left. I've got about 50 meters to go when an elite runs out and smashes me on the head.