Sorry, guys, but I liked Vocal Adrenaline's Queen tribute best. Just because people in the show said the other team had "heart," and that was supposed to make their singing "better" than that exciting, slick production number, we do not agree. We did notice the two leads, Finn and Rachel, lost a lot of pudge compared to when the series started, and he has improved a lot. I still don't like the way she caterwauls some of her notes - it's like nails on a chalkboard.
Out of the entire season, though, the Madonna video was a gem, as was the Joss Whedon-directed dance number with the wheelchair kid (Arty?) He was a phenomenal dancer.