Don't worry about Monday night. You didn't miss anything. The rest of the week looks pretty good though...
Tuesday:
KISS - The Tonight Show with Jimmy Fallon
Wednesday:
Mike D and Ad-Rock of the Beastie Boys - The Tonight Show with Jimmy Fallon
Thursday:
Tenacious D - Jimmy Kimmel Live
Mike Shinoda of Linkin Park - The Late, Late Show with James Corden