TimesTV critic Alessandra Stanley reviews the season premiere of "30 Rock" and finds it lacking. She places some of the blame on guest star Jerry Seinfeld: "[Seinfeld] shows up at Rockefeller Center to complain, and that's when the show goes a little wobbly: Mr. Seinfeld is strangely ill at ease playing himself, making his self-impersonation unpersuasive." How unfortunate! If only Seinfeld had any prior experience portraying a stand-up comedian named Jerry Seinfeld! [NYT]