Eskim- yo, Mallory! Justine Bateman is joining ABC's Men in Trees in the recurring role of a down-to-earth wildlife photographer ex-girlfriend of Jack's (James Tupper) who returns to Elmo with "startling news," an ABC rep tells TVGuide.com.... Reuters reports that David Spade has joined the cast of CBS' mid-season laffer Rules of Engagement, playing the best bud of Oliver Hudson's prospective groom.