BigFish Games is doing 40% off all games with the code STARSANDSTRIPES.
That takes the $19.99 games down to $11.99.
(There's no expiration date mentioned, I am guessing it is good through the weekend)
They also give a 60 minute tryout period on many games.

All info is here at their homepage.

This post has been edited by fheenix33: Jul 1 2008, 02:57 PM