A new bundle is now available from Indie Royale. The "Thoughtful Bundle" consists of "clever" games, proving that it can get really difficult to come up with consistently good themes for bundle products over time.
Which is not to say these games won't make you think. The rather challenging puzzle/platformer Snapshot is in there, along with the tower defense strategy of Fieldrunners. Aaaaa! A Reckless Disregard for Gravity and Snuggle Truck are there to satisfy your need for physics puzzles. And the second chapter of Cognition: An Erica Reed Thriller rounds out the bunch. All games come in Windows and Mac versions except Aaaaa!, which is Windows-only.
If you pay more than $8 for the bunch, they'll throw in a chiptune album, Night Animals by Bright Primate. Of course, you can pay less. As with all Indie Royale bundles, the minimum price increases over time while purchases over the minimum will help push the price back down for others.