I love the child hating adult smashing the dolls house. The try to cheer up animation where they comfort the other sim. Johnny Zest told a joke at my dinner party and the animations of shock and horror on my sims faces were priceless - must have been some joke! My host dropped what she was cooking and covered her mouth in shock. (he also takes an hysterical cross eyed tongue out selfie).
Most of the above listed animations too.
Plus playing with the kitten with a laser pointer - my male sim did it and the cuteness overloaded my brain. He also picked it up and snuggled it against his cheek - awwww
Any and all dog animations too.