“Good evening comrades — that was for (Bill) O’Reilly,” joked leftie Sean Penn accepting the Best Actor Award for playing the slain gay civil rights leader in “Milk.” Penn also noted the SAG award statuette, which was redesigned last year, “has a rather large package,” a reference to the groin area. He remarked that with himself squaring off against Golden Globe winner Mickey Rourke for “The Wrestler” on Oscar night, “the TV people have got their dogfight.” The other SAG nominees in this category, which match Oscar’s exactly, are Brad Pitt (“The Curious Case of Benjamin Button”), Frank Langella (“Frost/Nixon”) and Richard Jenkins (“The Visitor”).