What is the best Looney Tunes cartoon of all time?

Porky in Wackyland

A surrealist 1938 Bob Clampett short in which Porky Pig ventures into a Dalí-esque dimension to capture the last Do-Do bird.

A 1952 Chuck Jones short — the second in the Hunting Trilogy — featuring the brilliant logic-reversing dialogue between Bugs, Daffy, and Elmer.