Kristen Bell And Dave Grohl Perform A Frozen-Metallica Mashup On Jimmy Kimmel Live

I love everything about this Halloween performance on Jimmy Kimmel Live.

Kristen Bell, dressed as Magnum PI,  sings "Do You Want To Build A Snowman" from Frozen and "Enter Sandman" by Metallica with rock legend Dave Grohl, dressed as David Letterman, on drums.