Recently, we hosted a Game Night for a small group of friends. I had so much fun planning this one, as I didn't get too crazy with the details. For decor inspiration, I looked to one of my favourite entertaining books, InStyle Parties, which has a great section on game nights.
The colour scheme was red, black and white, with a black and white polka dot motif throughout (inspired by dice).
You can read more about the bash here: http://brilliantbash.wordpress.com/2011/02/06/brilliant-bash-game-night/