Season One had some awful clunkers, most especially with Allen - there was a hip hop with Snow (maybe?) that was just god awful and a toy soldier themed contemporary with Melanie. Bleagh. I'm remembering a Ben/Ashley (the popper with the bowler hats) disco by Doriana from S2, I think, that introduced her now infamous cunniliftus and that was nasty. Dmitry and Joy did a hip hop in S3 by Shane that sucked tremendous amounts of ass. S3 also had the Dead Daddy Dance (AKA Mia's flower routine) which I hated and the kiddie porn Kam/Lacey hip hop by Dan Karaty which featured Kam's whole entire face in Lacey's crotch as she popped like a video ho in a Lil John video. Wrong on many, many levels. In S4, I would definitely cosign on Mark and Kherington's country two step horror show. Twitch and Kherington had one of the worst tango's ever and the Twitch/Chelsie hip hop from the finale was maybe the worst finale routine of all time save Tasty's Broadway number for Donyelle and Heidi in S2. This season, Tasty's first Broadway number for Asuka and Vitolio was not of the lord and the Russian dance, as has been mentioned, was a travesty. I have to throw in NappyTab's hip hop for Evan and Randi where she was an unwed pregnant hip hopper and they danced to Beyonce's Halo. Gross and wrong.
So much hating, so little time.