If ever there was a film that deserved to be satirized, it is the 14 men meet 13 women across 10 subplots glorification of romantic, platonic and familial love known as Love Actually. Why it took 16 years for a work such as Love Actually? The Unauthorized Musical Parody to arrive on the scene is anybody’s guess, but the timing is right in at least one aspect. ’Tis the season when quirky Christmas musicals dot the Off-Broadway landscape, and this one, with its many flings being flung across five weeks of winter, is as full of holiday cheer as it is overflowing with whirlwind performances and witty pop-culture shout-outs.