Red Superfly
You creepy little stalker
Oh yeah the other dimension bit in Half-Life - yeah that was awful.
Oh and any of the library/alien ship stuff from both Halo's. Man, one long tedious corridor after another. YAWN. I want to go outside, in the snow, on the beach, with a warthog every now and then, and have some fun dammit. You would have thought that in Halo 2 they would ahve made more of a deal out of the fantastic vehicle bits.
But for me, I'd say it would have to go to MGS3 - The Ladder.
You will know what I am talking about if you have played it. It's a long, tedious ladder, THAT DOES NOTHING.
At least with the codecs, you can go get a drink or something and take a break. With the ladder, you have to move Snake up the ladder. Just one, long, pointless ladder. It serves absolutely no purpose and my mind still boggles as to why it's there instead of a simple elevator. This is a game, it's meant to be fun.
It takes approximately 1 and a half minutes to climb. There's no scenery, just a boring concrete tunnel. The Snake Eater theme plays as you climb - WHY?
You just sit there and hold 'up'. For a minute and a half, you watch Snake repeating his climb animation, in what could be the dullest level design I have seen since videogames began - it feels like an eternity.
"The Ladder" has become infamous with gamers across the globe already.
You'll finish it and think "WTF was that all about". You will.