I share your feelings on this guys. His comedic acting wasn't all script like some actors. His expressions, his hilarious gravelly loud insistent voice was always a sign you were about to hear something absurd.
He really is perhaps one of the most under-rated comedic actors of all time, as I never hear people referring to him as a comedy great as you sometimes hear said about the likes of Steve Martin, Richard Pryor, Mike Myers or Jim Carrey. I mean they are all different types of comedians, but praise and acclaim always seemed insufficient for the talents Leslie Nielsen had.
Olyy, the line about sniffing glue was Lloyd Bridges I think?