Friday's Tonight Show averaged a 3.9 rating and 9 share among households. The last time Leno approached those numbers was during the 2012 election when President Obama sat down for an interview. It was Tonight's biggest Friday showing since NBC's Olympics boost in July 2012.

 

It comes on the heels of Leno's second-highest rated week of the season with adults 18-49 -- averaging 1.249 million in the key demo between Jan. 20-24. 

Jimmy Fallon also scored a Friday lift, averaging a 2.2 rating among households, his best ratings in the 56 metered markets since Feb. 12, 2010 -- the night of the Vancouver Olympics opening ceremony.

Interest has been up for both broadcasts ahead of the changeover. Fallon scored his second-biggest 18-49 week this season as well during Jan. 20-24 with 824,000 viewers in the demo.