DD4 and I like to play:

Guess Who
Memory - where you put all the cards/discs/pictures face down and take turns to look at two at a time, and try to match pairs)
Unnamed game - you say "I'm thinking of a person/animal/machine/movie/feeling/whatever ... " and give clues but don't say the name of the thing.

Of course, that's when we're not playing dress ups, or tea party, or baddies and goodies, or halloween party, treasure hunt, etc. 😀