NBC announced Thursday that the freshman drama "Parenthood" and the relocated "Law & Order" and "Law & Order: Special Victim Units" will fill three slots. Another will go to the comedy panel series "The Marriage Ref" from Seinfeld.
"Dateline NBC" will fill another 10 p.m. EST slot.
The new lineup will debut after NBC's coverage of the Winter Olympics from Feb. 12-28.
Yet to be resolved is NBC's effort to make way for Leno's return to late-night TV by bumping Conan O'Brien and "Tonight" to midnight, a plan O'Brien has rejected.