If you had to pick one adult star to play a topless dancer, surely Keisha and her cannonball convexities would be at or near the top of most everyone's list. And the strength of her performance is what carries Boom Boom Valdez, a generally well-handled tale of ta ta terpsichory that arouses on-and-off-screen audiences as well. Keisha stars as Valdez, a dancer at a strip bar who finds her mother and sister disapprove of her career. Once sister Nikki Knights joins her one night at the club, however, it isn't long before the duo team up to show the patrons that talent (if not necessarily bust size. . . sorry, Nikki) runs in the family. Director Henri Pachard, an expert at making the most of a small budget, keeps things moving at a brisk pace. Nicely packaged.