If you're looking for frame-worthy art to hang in your house, look no further than your kids' picture books. In our bathroom hang framed images from Storytime, First Tales for Sharing, illustrated by Anne Wilson. Gotta love the Barefoot Books. We've got a Gingerbread Man theme going on in there I guess.
Here is a page from Brian Wildsmith's Tortoise and the Hare from Avery's room. I just love this illustration, and all his illustrations.

I can't remember the book these came from but I just loved them when I saw them, they were exactly what I'd been looking for to hang in Julia's room.