Locals who write off Fisherman's Wharf as a tourist trap full of snow globes and "I Heart San Francisco" T-shirts are only 95 percent right. They would be amiss to not venture into the Musée Mécanique, a shrine to arcade games circa, say, the year the Titanic went under. There's the mysterious Zorba the Wizard. There's Laffing Sal, a creepy, corpulent puppet who laughs hysterically for seemingly no reason at all. The English Execution — do we need to elaborate? There's a frowning man who rocks a giant crying baby that resembles an infant Chucky. If you get nightmares for a week from these low-priced games (most are a quarter), don't say we didn't warn you.