I started kicking the tires on Sketchbook Express. It seems like a really nice little tool. I had fun roughing this guy in. I've always wanted to learn to speed paint on the computer and this seems like a good tool to start practicing. The big question for me is this: do I get a nice Wacom tablet or should I spring for an iPad...or both? Ugh. My bank account is recoiling in horror as we speak.