But three couples were in jeopardy: injured Bill Nye and Tyne Stecklein, Christina Milian and Mark Ballas, and Brant Daugherty and Peta Murgatroyd.
But it was Nye and Stecklein who went home, following a fun, but low-scoring 16-point futuristic jazz number to Daft Punk's "Get Lucky."
"What breaks my heart is Tyne [has to go home]," Nye said after learning his fate. "She's fantastic."
Stecklein said what she'll miss most is his "sense of humor for sure. Maybe the science facts a little bit, but ..."
Although the elimination was a bummer for the dismissed pair, other couples had nights worth celebrating.
Corbin Bleu and Karina Smirnoff danced a quickstep that judge Bruno Tonioli said was "one for the record books" and Carrie Ann Inaba praised for "sharp and bright" footwork. They scored 26 points out of 30.
Elizabeth Berkley and Val Chmerkovskiy danced a 25-point foxtrot that Inaba said had a "boo boo in the middle," but still managed to get overall praise from the judges.
Daugherty and Murgatroyd danced a 27-point quickstep that had Inaba calling the Pretty Little Liars actor a "fantastic dancer."