Smallville's Michael Rosenbaum Explains Why He Left WB Show After Seven Seasons, Talks Returning for Series Finale

Getty The popular WB series Smallville ran for 10 seasons from 2001 to 2011, but actor Michael Rosenbaum only starred in seven of those seasons. Now, he's opening up about his decision to leave the show. The 54-year-old actor chatted with Variety in a joint interview with co-star Tom Welling to celebrate the 25th anniversary of the show premiering. Michael starred in the series as Lex Luthor, who becomes fast friends with Tom's Clark Kent, though they eventually become enemies. So, why did Michael Rosenbaum leave the show? "I mean, do I get into it?" Michael said in response to a . . .