Known throughout Pacific Beach for its location and hip, local clientele, the Green Flash serves adequate (and typically beachy) food at decent prices. The menu includes plenty of grilled and deep-fried seafood, straightforward steaks, and giant main-course salads. You'll also find appetizer platters of shellfish (oysters, clams, shrimp) and jalapeno "poppers" (cheese-stuffed fried peppers). The glassed-in patio is probably P.B.'s best place for people-watching, and locals congregate at sunset to catch a glimpse of the optical phenomenon for which this boardwalk hangout is named. It has something to do with the color spectrum at the moment the sun disappears below the horizon, but the scientific explanation becomes less important--and the decibel level rises--with every round of drinks.