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Officers conducted a sting operation by posing as French tourists who didn't understand English or the American tipping culture. Harper later claimed it was a misunderstanding and had no intention of ending up "Big Birdman of Alcatraz."

4. Mork Blows His Cork: Robin Williams lost his sense of humor last May when he accused impersonator Michael Clayton and Clayton's manager of conning charities into believing Clayton was the real thing. Clayton, who apparently does a dead-on Mrs. Doubtfire, was said to have passed himself off to groups raising money for a Missouri fire department. After a charity event was canceled, Williams sued. He and his look-alike eventually settled out of court, and no criminal charges were filed.

5. Boot-alicious Behavior: A woman posing as Beyoncé tried to score some discount shoes from Holly Dunlap, calling the designer's HollyWould store in May and saying that her "dear friend" Halle Berry had recommended the footwear. On Dunlap's online diary, she said the counterfeit diva exposed herself when she said she was calling from Houston. As a Beyoncé fan, Dunlap says she knew the real Destiny's Child singer was in Dubai.

Buck Wolf is entertainment producer at ABCNEWS.com. "The Wolf Files" is published Tuesdays.