Posted by edwarddwoodjr at chihardware-gw.wolfe.net on August 27, 2001 at 16:06:45:
Did I see Christopher Guest sitting in the easy chair as Jay & Silent Bob were getting on the bike, right before the E.T./MoonRaper scene?
imdb.com doesn't list him as a cameo. By the 3rd time I saw the film, I was waiting for that scene so I could look right at him. I'm positive it was him.