N.B.C. has confirmed that Jay Leno's stint in prime-time television has come to an end. Representatives with N.B.C. say that Leno's last prime-time show will continue to air up until the beginning of the Winter Olympics on February 12th. N.B.C. Chairman Jeff Gaspin says he wants Leno to go back to his old time slot, and says he wants Conan O'Brien and Jimmy Fallon's shows to shift back a half-hour. Though it's not a done deal, Gaspin says he hopes to have N.B.C.'s late night line-up cleared by the beginning of the Olympics.