How come Gary Busey isn't listed in the cast?

Probably just an oversight...happens on IMDb every once in a while... you can always submit a correction to IMDb ya know... :)

Unless a film has a very small cast, the complete cast list is probably not going to be shown. If you look at the bottom of the cast list on this page, you'll see a "more..." link. Click on that and you will then be able see the full list, which - in this case - DOES include Gary Busey.

He is listed now