I can't remember what guild mission it was, but at some point in Oblivion, there's a quest where you have to make your way through a long cave passage.
Eventually, come up to a fork, where you can either kill something really, really hard, or work your way through a bunch of spike traps that instantly kill you when you brush up against them.
The first time I played the game, I played a Khajiit, and used my superior jumping skills to hurdle the spikes first time and carry on with the quest.
Second time of asking, I played a Dark Elf, and since I could no longer perform super human jumps, the spikes became really fucking annoying to get by. I suppose I *could* have gone the other way, but I KNEW it was possible to get by that way, and I was DETERMINED to get by.