It was "Hell House", it's in the scene right after the half-nekkid Sam scene, when the coffee guy gives Dean their drinks. The guy actually says "Here you go, gents." but it sounds like "Here you go, Jensen." (Believe me, I think it'd so cool if it had been "Jensen"!)

Anyway, I listened to the scene in "Provenance" again, and dammit, Dean says "Sam", not "Jared". If you listen for "Sam", you can tell he actually does say that, not "Jared". *pouts* Oh well.