What's On Tonight: 30 Rock, 7 Days of Sex, The Costco Craze

30 Rock, 8:30 p.m., NBC

The annual live episode! Last week was perhaps the most magnificent 30R of all time. It was hilarious and poignant and well acted and sharply satiric. And they threw in a reference to Avery! Love.

7 Days of Sex, 10 p.m., Lifetime

OK, in all seriousness, do the show creators at Lifetime simply lock themselves in a small room with a vat of margaritas and a pile of dirty magazines in order to think up these new “reality” shows? In this one, “After 7 days you won't believe what these couples discover about themselves underneath the sheets. When the going gets tough, could your marriage survive...7 Days of Sex?  The kids, the bills, working late hours…in relationships it's the little things that can lead to big problems. Each week this all new reality series follows two new couples whose marriages' are at a cross-roads and have agreed to a do-it-yourself marriage fix. Sex … we think of it as naughty, racy and fun, but maybe it's more than that — maybe it's actually good for you!”

The Costco Craze, 9 p.m., CNBC

I went to BJ’s once. Years ago when my kids were really little and we were going broke buying diapers. I can barely function in a Stop & Shop, and I only last about 20 minutes in a mall. BJ’s broke me.