Peter Bogdanovich's attempt to revive the screwball comedy genre is more imitation than homage, especially if you've seen the Howard Hawks classic BRINGING UP BABY. Still, the film has plenty of good 1930s slapstick and cartoon humor to hold your attention and to justify Bugs Bunny's famed
opening line (which serves as the title) and Porky Pig's equally famed closing: "Th-th-that's all, folks!" Ryan O'Neal, a clumsy, shy professor from Iowa, hopes to win a $20,000 fellowship in musicology. He carries some ancient rocks in a plaid suitcase; the rocks demonstrate his theory on music's
prehistoric origins. O'Neal arrives at a San Francisco hotel with his fiancee, Kahn...