Mary-Kate Olsen channels her inner bad girl (or maybe it's sis Ashley's inner bad girl) on Monday's episode of Samantha Who? (ABC, 7 p.m.), playing the latest reclamation project of Christina Applegate's title character. M.K. does nicely as a charming chiseler Natalie in the scene above, and seems to be moving past her evil ways in the two clips after the jump. Or is she?