The Tonight Show with Jay Leno

Slash had an "I'm with Coco" button on his guitar strap while performing. Showing his allegiance to Conan O'Brien.

Barack Obama will be the first sitting president to be on the Tonight Show.

Famous sports announcer Michael Buffer was in the audience on this episode, and during the "The audience wants to know" segment, after doing his patented "Let's get ready to rumble" introduction, he proposed on camera to his girlfriend, Christine.

The ice skater Jay Leno mentions during the Ricky Lake interview is Katarina Witt, featured in infamous Playboy spread at the end of 1998. She in fact failed to appear in the show due to the "dispute" Jay refers to.

During "Headlines", the black cardboards kept falling over, refusing to stay in place. As Jay pointed out back from commercial...that was because the stand on his desk was facing the wrong direction, and so he just kept placing the cardboards against the wrong side, the one with no baseboard to hold them still!

When Cole and Dylan Sprouse walked to greet Jay, the band played the theme song without the lyrics to The Suite Life of Zack and Cody. The Suite Life of Zack and Cody happens to be the show Cole and Dylan are the two main stars.

Because viewers are annoyed by John Melendez's signature solute after the monologue, starting in this show, he raises his cup instead.

During her interview, Leelee Sobieski revealed that, earlier in the day, she'd had her ears pierced for the very first time in her life.

Floyd Landis was scheduled to appear, but the appearance was cancelled.

Tina Fey Announces in tonight's show that she will not return to SNL's "Weekend Update."

None of the disruption was broadcasted.

When a women, Dessarae Bradford, disrupted tonight's taping, audience members seemed to think it was part of a skit, until she approached and started speaking to Colin Farrell.

NBC decided not to press charges against Dessarae Bradford, who disrupted tonight's taping.

During taping, Dessarae Bradford, a woman who has a grudge against Colin Farrell (she filed multiple lawsuits against him to not avail and even wrote a song and a book about him and Alec Baldwin, both extremely derogatory to say the least) jumped onstage from the audience and confronted him. She was promplty escorted out by security and the taping went on without further incidents.

This is George Carlin's 140th appearance on the Tonight Show (including with previous hosts); this is also his 50th year in show business.

Ann Coulter's book Godless: The Church of Liberalism debuted #1 on Amazon.com and NYT Bestseller List.

Carlin largely kept quiet during Coulter's segment. The show kept it as separate guest segment, rather than a panel.

During "Headlines", Jay introduces the first object as a "chinese" item. But the writings on the package are obviously not Chinese letters, but Arab ones. In fact, a quick Google search reveals that it's manifactured by a company in Damascus.

Tonight's epsiode was interrupted on the West Coast by the news of the death of Musab Al-Zarqawi.

Aired later in some market due to local coverage of the Primary Election results.