Parts in pretty much every recent action game where instead of anything interesting happening you get to rock climb along ledges and do 180 leaps to more ledges to creep along yet another ledge.
Seriously, other than to pad game length by turning one lousy room into a wall climbing labyrinth why do games even have such in depth climbing mechanics?
In Shadow of the Colossus, Ico, Prince of Persia, and Assassins Creed its pretty integral to the gameplay and defines the games in a way.
However, I think its pretty stupid that Lords of Shadow, Dante's Inferno, Darksiders, God of War etc. rely so heavily on climbing and swinging around with your weapon.
I guess it just annoys me that in otherwise action oriented games, where the characters aren't specifically supposed to be acrobats etc. you find yourself hanging from/sidling along a damn ledge for 3-5 minutes at a time trying to find another ledge or climbable surface usually with mobs taking easy shots at you.
One thing 2D action games have over 3D is that you usually just go left to right and jump or use ladders/ropes sparingly. You don't lift half your level straight from Donkey Kong Jr.
I love Deadspace and most other survival horror games because unlike "action games" you typically don't end up climbing around on walls like a spaz.