Figured you guys might get a kick out of this.
One of the classes I teach at work basically boils down to discussing and listening to popular music. So, we usually flip through the students' iPods and pick some tracks. I was looking through one kids iPod and saw he had "the song" in it. So, I played a few random old Ringo Starr tracks, then told them I had a good one to play next. Busted out the Rick Astley on them
A bunch of them cracked up and said, "Damn, we just got Rick-Rolled by the teacher!"