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Fans hoping to catch O'Brien's swan song have been lining up outside NBC since yesterday.

O'Brien says goodbye to "Late Night" tonight. He's hosting his last show before heading to Los Angeles to take over for Jay Leno at the Helm of the "Tonight Show."

Fans say it'll be well worth the wait, if they get tickets for tonight's show.

"I just love Conan and I'm really sad he's leaving and I'm really excited to see the show," said a fan. "I know it's going to be amazing and I just absolutely had to be at the last show."

"Conan's great," said another. "He totally like hung out with us for a few minutes and it'll totally be worth it if we get in."
"We went to the show yesterday," said a third. "Then, once we got out, we got back in line."

O'Brien took over "Late Night" from David Letterman in 1993.

Jimmy Fallon will replace O'Brien on the New York-based show starting March 2nd.