Busey, with his drug addled persona, was perfect for the film.
The film had some great cameo's... most of whom, coincidentally, have a rough history with drugs.
My favorite cameo from the film has to be Flea from Red Hot Chili Peppers, as the bassist of Jefferson Airplane, when he walks in on HST doing acid in the bathroom, and starts licking him.
"Somebody told me when the bomb hits, everybody in a two mile radius will be instantly sublimated, but if you lay face down on the ground for some time, avoiding the residual ripples of heat, you might survive, permanently fucked up and twisted like you're always underwater refracted. But if you do go gas, there's nothing you can do if the air that was once you is mingled and mashed with the kicked up molecules of the enemy's former body. Big-kid-tested, motherf--ker approved."
