Oh yes. I saw Hairspray last night. No time for a lengthy review, but it was swell.
Vilanch's ad-lib schtick was limited to the in-front-of-the-curtain portion of the "Your Timeless to Me" scene. Inasmuch that set-up--and Wilbur's outfit--evoke vaudeville, it worked.
Fun show, fun score, fun scenery, costumes and wigs, fun time.