If you need proof of how lively and diverse the San Francisco theater scene can be, let me direct your attention to two wildly different shows I've seen recently. One is about as old fashioned as it gets, while the other is wonderfully experimental.

For sheer retro-musical theater pleasures, Mel Brooks' Young Frankenstein – at the Golden Gate Theatre until July 25 – is a prime example of Grade B goods. There was a time on Broadway – think the 1950s and early '60s – when these kinds of shows populated the Great White Way. Taking the term "musical comedy" to heart, these shows have no objective other than to please its audience for a couple of hours. A few laughs, a few hummable tunes, and we're done.

With The Producers Brooks fulfilled a lifelong passion to create a musical theater blockbuster. Now Brooks is settling into his groove with Young Frankenstein, an extremely faithful version of his classic 1974 movie (co-written with star Gene Wilder). As a recycler of his own material, Brooks sticks to the formula that worked for the movie and supplies songs that, while not as catchy as those in The Producers, are appealing.