Nicholas Cage
Cage, who ironically starred in a movie where unpaid taxes was a major part of the plotline (National Treasure: Book of Secrets), reportedly owes the IRS more then $6.2 million in unpaid taxes 2007. The IRS even issued a lien on Cage's $3.55 million haunted mansion in New Orleans.
Dustin Diamond
Saved by the Bell star Dustin Diamond has also been accused of neglecting to pay his taxes. According to gossip site TMZ, Diamond owes $21,015.62 in unpaid taxes to the state of Wisconsin. Apparently a lien was filed against his property, and the courts claim that no settlement has been reached.