In case you missed it, Penny Arcade's first foray into the game-making world, On the Rain-Slick Precipice of Darkness, is out now. I've been playing it all day. It's great. Notsomuch for the gameplay, which is standard stuff, but definitely for the charm. If you're not the type to trust my recommendation, however, (though really, you should, I'm a nice guy) anyone with a PC (Linux included) or Mac can grab a demo of the first episode, take it for a spin, see how it feels. Even if you hate smashing item boxes and turn-based combat, it should at least put a smile on your face.
On the Rain-Slick Precipice of Darkness Demo [Windows, Linux, Mac]