The last cartoon with Mel Blanc vocalizing Bugs Bunny .
Hugo is modeled after Lenny, who first appeared in Steinbeck's novella, "Of Mice and Men."
Bugs spoofs a popular chewing tobacco tagline, just a pinch between the cheek and gum.
The Marvin Martian watch face is a subtle poke at rival Disney's ubiquitous Mickey Mouse timepiece.