"Parts were magic, parts were tragic," head judge Len Goodman said.
DeLay even wowed his professional partner, Cheryl Burke. "I just busted out laughing because I was, like, I can't believe this old man is here on his one knee playing the guitar and doing exactly what I told him to do, no questions asked," she said after the show.
(Fill in your own lobbyist joke here.)
Watch him do his thing here ...
Genuine laughs all around when, in the rehearsal footage, Delay's instructor kept telling him to go left, left, left! -- and the conservative pol explained that "going left for me is absolutely outrageous." Ba dum bum!
DeLay finished with 20 points. "I have to say I nailed it," said DeLay, wearing orthopedic shoes to help alleviate the bruising and near stress-fractures on his feet after weeks of rehearsals. "I felt good. My hips were working. Cheryl held me up and I really, I did it. I nailed it."
Aaron Carter came out on top, earning 32 points out of 40 for his two dances.
Another surprise from the night: Watching competitor Donny Osmond perform was his sister Marie, sitting in the crowd alongside another famous sibling, Jermaine Jackson.