Speaking of East Fourth Street, La MaMa Experimental Theatre is having a blowout block party this Sunday, Oct. 16 from 1 p.m. to 6 p.m. to celebrate its 50th anniversary. Expect food from Momofuku (which just debuted its quarterly magazine “Lucky Peach”) and neighbor Cucina di Pesce, along with performances by Blue Man Group and a gospel choir. For more, click on the image of the poster.