A
gallery of weird technology mascots on Wired includes Adobe's Jester, Microsoft's Clippy, Ask.com's Jeeves, and Apple's dogcow (above) back from 1983 that was designed to show proper paper orientation.
If you are into ad mascots, TV Acres has
lots of information on a wide variety of different ones. There will be an entire
Icon Advertising Museum opening in Kansas next year, too.