TS2 is so full of little details! It's great to play at speed 1 and see all the little animations and discover all the details.
I just discovered that if a sim goes to bed in a bad mood (or maybe it is with low aspiration meter I'm not sure) they'll have nightmares and wake up as if they are having a heart attack
http://vignette2.wikia.nocookie.net/sims/images/5/51/NIGHTMARE.png/revision/latest?cb=20090729081239
Also children can slide down banisters (it's an autonomous action) at least in spiral staircases.
http://www.affinitysims.com/IPB/uploads/monthly_02_2015/post-12999-0-91199300-1423876679.jpg
*pics are not mine