one of my favorite pastimes used to be in Assassins Creed. During exam week i'd need something to do during study breaks that wouldnt get my remotely excited. So i would put in Assassins Creed, and walk around like i WASN'T a super agile badass.
Basically, i would put on some soft music (i HIGHLY recommend A Perfect Circle). and limit myself while playing to not use the right trigger for travelling, from the very start. that way i'd be used to walking speed and wouldnt get impatient. Also, not getting in a fight or anything, and if climbing, use ladders whenever possible, and not taking any extreme jumps.
I'd walk around the cities, looking like a normal person, and i'd occasionally spot one of the dudes you can pickpocket, and i'd try and pickpocket him really sneakily. Or i'd occasionally climb up a building (via ladder only), casually hop from roof to roof, and try to stealthily kill an archer.
The game is really pretty to look at if you just slowly walk your way around.
-Oh, and also i like to play Tony Hawk Project 8 (the new one might work as well) and turn the "speed" setting down to like 2, so that ollie-ing a 2 step staircase was a feat. realism kicks ass!