Late Night Highlights: Jimmy Fallon and Bruce Springsteen Cover Willow Smith's 'Whip My Hair'

For the second week in a row, Jimmy Fallon trumped his late night competition thanks to an inventive musical act. This time it was a haunting rendition of Willow Smith's pop hit "Whip My Hair" with Bruce Springsteen -- who stuck around the entire episode -- and Jimmy Fallon as Neil Young. Elsewhere, Harrison Ford appeared to be either drunk or high on Conan, Stephen Colbert parodied Sarah Palin's Alaska and Craig Ferguson paid tribute to Doctor Who to the best of his budgetary abilities. Best night of late night ever? Let's find out!

4. Doctor Who Night

Craig Ferguson kicked off of Doctor Who Night by scolding his producers for failing to obtain the legal rights to the BBC show's theme music so that he and his friends could not properly start the show with a good old-fashioned lip sync.

3. Stephen Colbert's Own Alaska

On last night's Colbert Report, Stephen took a cue from the action-packed credits of Sarah Palin's Alaska and put together a new credit sequence for his Comedy Central show.

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2. Harrison Ford: Drunk, High or Just Off His Meds?

The Morning Glory lead appeared a little...off on last night's Conan. Maybe it was his especially slow reaction time, his confusion or the fact that he spent the majority of his segment caressing his chair, but there will surely be a lot of substance theories circulating the internet today.

1. The Boss Whips His Hair

During Jimmy Fallon's very special Bruce Springsteen edition of Late Night, he reprised his Neil Young impersonation and joined the Boss for a stirring rendition of Willow Smith's "Whip My Hair."