http://www.theregister.co.uk/2010/07/21/apple_donates_macpaint_source/
http://www.computerhistory.org/highlights/macpaint/
Bryce.
I think the Amiga had them all beat.
8.5k lines of code... niiiiice!
I don't see much use for it, though, unless some creative souls start tinkering with it :)