Jay Leno and NBC have announced that Leno’s last day as host of The Tonight Show will be May 29, 2009.  His replacement, Conan O’Brien, will take over on the following Monday.

During a Television Critics Association panel in L.A. Monday, Leno announced he would leave The Tonight Show with Jay Leno on May 29, 2009.

His successor, as previously announced, will be Conan O’Brien, whose first night as Tonight Show host will be the following Monday, June 1.

The actual date of the transferring of power is news, but we have known for a couple of years now that NBC and O’Brien already had a contract for him to replace Leno on The Tonight Show.