Cabaret wouldn't be a risky choice for most theater companies — the show has been around a while, and its shock value has faded. But for Phamaly, composed of actors with a variety of disabilities, this musical about the dissolute life activities in Berlin's Kit Kat Klub in the years leading up to World War II represented a huge challenge. Performers were asked to writhe, pose, embrace and strut their sexiest stuff on stage in skin-baring costumes, and they did it with beautiful, no-holds-barred panache.