Late-night TV hosts see hundreds of musical guests come through their studios, so it’s always fun to see when one of them really gets stoked about a band he just saw. (I am not counting Jimmy Fallon in this. Jimmy Fallon is always stoked.) For a prime example of a stoked TV host, watch David Letterman reacting to TV On The Radio on last night’s Late Show. But first, watch TVOTR blaze through a passionate, squalid, punk-as-fuck rendition of their soaring new single “Mercy,” because it’s the sort of performance worth getting stoked about. You can watch the performance and Dave’s reaction below.

How ’bout this guy?