Nov. 13-19: An evil clown lurks on television, Arnold gets cloned, the Grinch goes big, Community gets conspiratorial, Elizabeth Banks breaks out of jail, Tom Green gets weird on SNL, Harry Potter hits the road, and Macaulay Culkin stars in a Christmas classic. All that and more this week on Thirty Twenty Ten, your weekly look back on the week that was 30, 20, and 10 years ago.