Board Games: Chameleon, Wordy Word, Risk, Settlers of Catan, Clue, Epidemic
Card: Egyptian Rat slap, Five Crowns, Pit
Misc: Bananagrams, Klask, Mancala
Bonus: Does anyone know the name of the game where you have a 'circus' and you have to balance your acts (like a seal on a block and other more elaborate things) within a time frame and you have certain cards that give you extra points if you achieve them, and there are points you get for using certain objects, etc? I played this one time and I want to bring it to game nights with my friends this summer, especially before the son leaves to college in the fall as I think he would really enjoy playing this game.
Age: It's mostly a group of teens from middle school and high school (12-18), there are some elementary school kids occasionally (>7, doesn't play seriously/with a partner) and a few college age students (19, 21). The parents usually have their own thing going on, but there are also some people joining that are in their mid-20's and the host parents will play with their kids and I often.
Number of players: If it's a flexible game, that is best but not required. Sometimes there are as few people who want to play as 2 or 3, or there can be upwards of 8 people who want to play.