Watch Dave Grohl & Kristen Bell Perform A Metallica & 'Frozen' Mash-up

As far as accuracy goes, Dave Grohl may have taken the cake for Halloween as he stepped into the role of late night host on Jimmy Kimmel Live. While Grohl was dressed as David Letterman, full beard and all, he did his best to imitate Metallica's Lars Ulrich behind the kit while Bell channeled her inner James Hetfield on the mic.

The Frozen star then performed one of the Disney phenomenon's most famous songs: Do You Want To Build a Snowman.

If you're feeling a little homesick for Kimmel's classic Halloween show, have no fear: Grohl even delivered Kimmel's famed "I told my kids I ate their Halloween candy" challenge. The Foo Fighters frontman jammed with Kristen Bell performing a hilarious mash-up. Introducing the Foo Fighters for that performance, Letterman said "my favorite band playing my favorite song".

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In the same episode, Grohl also interviewed fellow rocker Alice Cooper - appropriate, given that it was Halloween.

That's what happened last night however when Frozen's Kristen Bell stopped by Jimmy Kimmel Live.