PBS has expressed interest in Ted Koppel... Rena Sofer (Melrose Place, Ed) will guest star on a May sweeps episode of Friends playing a salesgirl with a crush on Ross (David Schwimmer)... TNT is planning a four-hour miniseries based on Stephen King's best-selling book Salem's Lot... Rosie O'Donnell will make an appearance on Monday's episode of NBC's The Colin Quinn Show... Tom Green returns to MTV March 27 in the one-hour special, Tom Green's Subway Monkey Hour. According to the music network, Drew's ex "heads to Japan to visit its many attractions and stir up some trouble with his unpredictable and zany antics."