In 1963, Judy Garland was the star of her own TV variety series and a desperately unhappy drunk. In this hour-long holiday fantasia, Open Circle Theater imagines the dress rehearsal for Garland's legendarily messy 1963 Christmas special. With improv genius Troy Mink in the title role, expect a night of inspired, lightly upsetting comic mayhem. (Open Circle Theater, 2222 Second Ave, 8 pm, $15.)