When I saw Them Crooked Vultures at their first show at the Metro, nobody knew what to think of “Interlude with Ludes”, with John Paul Jones coaxing a cheesy tune from a keytar and Josh Homme vamping around the stage like a campy seductress, but it at least showed Homme’s supreme self-confidence and disregard for a stodgy, hypermasculine stomp-rock image, for what people expect him to be. The same will probably go for Julian Casablancas on Conan, where instead of standing behind a mic stand and rolling his eyes, he dances around like a bizarro Tom Jones. My thoughts cycled from “I can’t believe he’s doing that” to “I can’t believe he’s making it look cool”, from “is that actually cool?” to “who cares?”. The performance is more fun for it. It’s not like he could sing this song and not dance.