Les Ballets Trockadero de Monte Carlo (Joyce, 175 Eighth Ave., closes Jan. 2). The Trocks are an all-male ballet company whose “women” dance in drag. Sometimes they do the classics more or less straight, sometimes they dance brilliantly witty parodies, and sometimes they do out-of-left-field works like Merce Cunningham’s Patterns in Space, which is on the first of the two programs that they’re dancing during their current New York season. No matter what they’re doing, the results are at once uproariously funny and mysteriously illuminating. To spend an evening with the Trocks is to think twice–or more–about what ballet is and how it works. Very strongly recommended, even to those who (like me) are usually allergic to drag acts (TT).