I choose a homage to Norman Rockwell. Norman is one of my favorite painters, and it just seemed right to work up an image with him in mind.
Currently there is a voting process to pick everyones favorite, so if you feel so inclined: Please go and vote (Please vote for who you want really. You can vote for more than one too)
Previously, Blender, the opensource 3d, modeling package also held splash screen contest and there are a lot of interesting images there too.