Can a president stay in office more than 2 terms and under what curcomstances?

Ever since the 22nd Amendment to the Constitution was ratified on February 27, 1951, no president can serve more than two (2) terms. Since that ratification, only three (3) presidents have served two full terms: Eisenhower, Reagan and Clinton. George W. Bush will become the fourth president to have served two full terms upon completion of this current term which runs through January 20, 2009.

The only president elected to serve more than two terms was Roosevelt.