Apple rarely, if ever, uses celebrities in their advertising, particularly as themselves. The "I'm A Mac" ads featured Justin Long and John Hodgman, but they were playing characters rather than acting as a celebrity endorsement. One notable exception was actor Will Ferrell who did a number of iPod ads a few years back.
The old Switch ads had a ton of celebrities
- Tony Hawk
- De La Soul
- DJ Q-Bert
- etc