The folks over at the Go Mediazine blog just released a set of 2 High-Res Watercolor Textures for everyone to feast on. You can never have too many textures, and these are 2 good ones. (jpeg format) While your there, be sure to check out the rest of their freebies section, and they have some great design tutorials as well.
Formally trained at Oklahoma State, Jay Hilgert is a graphic and web designer, font designer (Link), software developer (Brush Pilot™), and the founder of BittBox.