^ Wikipedia's article on this season lists all of the dances that took place. (ETA: TopCatDC beat me! )
S7 would have been my least favorite, if it hadn't been for Lauren's win. Now, it's my 2nd least favorite, just ahead of S5. But thinking about it, I'm not sure about that.
S5 at least had a couple of memorable routines: the Addition piece with Kayla/Kupono, the paso doble with Brandon/Jeanine, the Bed HH with Jeanine/Phillip, the disco with Janette/Brandon, the cha cha with Kayla/Max (I'm biased ), Evan's fantastic solos, the contemporary with Jeanine/Jason, etc etc.
S7 had... uhh... well, the ones that come to mind personally are the Prom piece with Lauren/Kent, the homeless contemporary with Billy/Ade, the group routine that Mia did (with Allison in the center), and, of course, Outta Your Mind. But they're not great in comparison IMO. Watching the Billy/Ade piece again on the finale, I wasn't as impressed I once was. I also rewatched Outta Your Mind, and it wasn't as good as I thought it was. I liked the Prom routine, but it was sorta like the Jeanine/Jason dance again. That leaves the group routine by Mia, which just shows that Mia should stay as a choreographer.
But the end result of a season can drastically alter your opinion of a season. Take Survivor: Gabon as an example (for all you Survivor fans). I loved that season... until Bob won. That's the same thing that happened with S7, except in reverse.
I liked Jeanine, and I thought she was a great winner. But I sorta knew she would win. With Lauren, it was such an epic win. I was fully expecting Kent to win, which would have sucked because I really did not like him. So to see your favorite triumph over the person that you liked the least was very satisfying.
But then again, there were so many things that went wrong with this season (lack of memorable dances, female decimation, the numerous injuries, etc). Does the end satisfaction counter all of that? I don't know.