The fast talking description game. Play in pairs or larger teams, taking it in turns to describe as many card entries as possible in each thirty second round (making sure not to using rhyming clues or "sounds like..."). Great fun for families but be warned it can get very, very competitive!
4-8 players (...you can play with more players as there's no absolute limit to the number of players on each team, but we've found it's most fun playing within this range.)
Age 12+ (similarly, if you're playing with particularly verbose little ones, by all means include the younger children too!)