Show of the week: 30 Rock

For the second time, the Emmy-winning NBC comedy about the backstage world of a thinly disguised Saturday Night Live goes live itself for one episode. The premise: It has been decreed by Kabletown executives (stand-ins for NBC’s own Comcast overseers) that the SNL doppelgänger TGS will no longer be produced live. It falls to TV-loving NBC page Kenneth (Jack McBrayer) to remind everyone of the storied history of Studio 8H (the real-life home of SNL) and the magic of live television. Two versions of the episode will be performed, one for each coast. Thursday, April 26, at 8:30 p.m., NBC