Seller's character is based on a mix between Peter Weller's character, Bill Lee, in 'Naked Lunch' (1991) & Hamilton Camp's character, 'Shorty' in 'Arena' (1989).
The robot waiter who says 'want some more?' is a refference to The Fifth Element (1997). Also, there are several taxis in the background that resemble the floating taxis seen in the film.