My personal fav is the FM advert, but I also like the series of retro 50's USA ads.

BTW There ads for Canon
http://www.youtube.com/watch?v=16PjtXZfio0
and Minolta
http://www.youtube.com/watch?v=LeU3f...eature=related
Konica
http://www.youtube.com/watch?v=Wo7qc...eature=related
Fuji-Film
http://www.youtube.com/watch?v=glgdp...eature=related
Olympus
http://www.youtube.com/watch?v=SzSAQ...zbBhQ&index=14

Edit: I also like the second F801 advert. I miss that camera.