Late Night Highlights: Betty White Takes (and Spits Up) a Birthday Shot with David Letterman

Last night, Betty White celebrated her 89th birthday with David Letterman and a shot of vodka, which she quickly spit up. Elsewhere, Jimmy Fallon and the Roots performed with Steven Tyler, Regis Philbin celebrated his impending retirement, Larry King parodied himself, and Stephen Colbert promoted a new Slanket competitor, the Coma Cozy.

5. Regis Retires

Regis Philbin celebrated his retirement announcement by calling into The Late Show with David Letterman.

4. Speaking of Retiring Broadcasters...

Larry King used his new spare time to interview Craig Ferguson on Craig Ferguson's own show.

3. Stephen Colbert: Forever Lazy

The Colbert Report host took offense with a new comfort outfit called Forever Lazy because it required way to much effort. And that's when he introduced his own product, the Coma Cozy which comes with a feeding tube.

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2. "Walk This Way"...with Jimmy Fallon

When new American Idol judge Steven Tyler stopped by Late Night, he humored the audience by performing his classic "Walk This Way" with Jimmy Fallon, Tariq and the Roots filling in for Run DMC.

1. Betty White Spends Her Birthday With Dave and Vodka

The screen legend rang in her 89th b-day on The Late Show by trading vodka shots with David Letterman. Cheers!