In real life, Conan O'Brien hosted NBC's Tonight Show from June 1, 2009 to January 22, 2010. NBC barely remembers that, though. 

The Tonight Show has aired on NBC since 1954, with five hosts — Steve Allen, Jack Parr, Johnny Carson, Jay Leno and Conan O'Brien. On February 17, the sixth Tonight Show host, Jimmy Fallon, will make his long-awaited debut.

To pack the show's entire history into a one minute and five second advertisement would be next to impossible. But you would think NBC would lend more than a combined 1.5 seconds to Conan O'Brien, the last guy who replaced Jay Leno, in their new television spot. His face appears once for a split second: 

In case you missed it:

See, he's there! NBC doesn't even let O'Brien complete his clap before swiping to the next frame. O'Brien appears for that single, glorious second. Later, his name appears when NBC chronologically lists the show's hosts. Instead of the proper host order — Allen, Parr, Carson, Leno, O'Brien, Leno — NBC opted to list them like so: Allen, Parr, Carson, O'Brien and then Leno, as if Leno has only hosted since March 2010. 

That's not how history works, guys. Though, credit where it's due: at least NBC remembered to mention O'Brien at all.