1). Once a Sim is a werewolf, he has the option to 'Savage' another Sim....which is a fight. Your werewolf Sim always wins & the other Sim is now a werewolf.
2). A teen that gets caught sneaking out, can actually get smacked by the parent (if caught more than once in the same night). Once caught, a message pops up from the parent. I made the teen go out again and the parent was waiting for them and gave the teen the smack down (similar to cheating). Not that I'm an advocate for hitting...I just thought this was hilarious, as I had never seen this before & have played this game for years.
3). The genetic system rocks in TS2!!! Hybrid combinations...you can get some weird looking Sims. My Sim is a hybrid between alien and human. She has human skin, hair. But her eyes are like the alien eyes....very big & black. She's now aged & has kids...and those big bug eyes have been passed down to her children, grandchildren. Love it!