SERIES PREMIERE: Anyone close enough to receive New York’s WNET-Ch. 13 on cable or broadcast TV is in for a treat starting tonight, because THIRTEEEN is launching a new series that takes full advantage of one of the city’s biggest calling cards: the theater. In this case, Theater Close-Up looks not at the bigger Broadway houses and productions, but the plays and musicals performed in Off-Broadway, and even Off-Off-Broadway, venues. (One more Off-, and they’d be performing in my living room in New Jersey.) Sigourney Weaver hosts this welcome new series, which aims to preserve, on TV, complete productions from this rich world of New York theater. Starting off: the Mint Theater Company’s London Wall, a revival of John Van Druten’s 1931 play, starring Julia Coffey and Mathew Gumley. Check local listings.