I, too, think something went wrong with Melissa's dance. Was it just my eyes, or did the bottom of her feet looked dirty? Anyway, very awkward, and hardly worth mentioning she'd be dancing for all the longer it lasted.
I also thought Derek and Joanna knew ahead of time by their reactions. Still disappointed when the moment came, I imagine.
I'm also beginning to think this show is as staged as TB. It's also my opinion that Mya shouldn't be in the finals with her prior dancing experience. What do we want to see next...a whole cast of experienced dancers compete against each other? I'd much rather see contestants with little or no dancing experience compete and watch them improve each week.