Kelly Clarkson is on hand to sing "Mr. Know-It-All." Wow, her voice sounds different on this song. Not in a bad way. She sounds really smoky and raspy. I like it. I don't love this song, but I like her a lot and I'm looking forward to her new album. Tristan and Kym dance while she sings, and when her song ends, Kelly comments on how hot they are. Tom tries to get her to agree to be on the show but Kelly says that it would be a comedy.

It's time for the inspirational segment, about a young woman who grew up in Compton and her single mother made many sacrifices for her to take dance lessons. And now she's going to dance with Mark and Derek. It's a cool routine; Charm (the young lady) starts dancing at the top of the stairs with Mark and Derek beside her on video screens. They use cool effects to make it look like Mark and Derek are appearing and disappearing. Then she descends the stairs and the real Mark and Derek show up and dance with her. She's really good. It must be fun for Mark and Derek to dance in a more modern style once in a while. They're both really good at it (and you know it kills me to say that about Mark), and don't get to do it on this show very often.

The Band Perry is on hand to perform their number one song. Really? Well, it sounds country, which may explain my unfamiliarity with it. Louis and Karina come out to dance to it.

Before he danced, Rob said that he wanted to get at least one 9, and he did. Karina and JR were thrilled with their scores as well. Kym and David stayed in their punk character complete with British accents for a while after their dance, and then David complained that he stays knotted up inside too much and then fell off his chair? I'm a little worried about him. Anyway, are those three couples safe or in jeopardy? JR and Karina and Rob and Cheryl are safe. David and Kym are in jeopardy.

Kelly Clarkson is back to sing "Walkaway." Love this song. Except Mark and his stupid spats are back to dance to it. Ugh. Nice to know that he over dances his pro partners just as much as he does to his non-pro partners. It's not as noticeable since the pros can keep up with him, but he adds in all these flourishes and unnecessary Michael Jackson moves. I really can't stand him. Even more so since I saw that he did some questionnaire in, I think, People, and he said he really admired Kurt Cobain, and that if he ever had a daughter, he would name her Nirvana. I think Kurt Cobain would hate that. Can you imagine, Kurt is all peaceful in the afterlife (if you believe in such things) and he's like, "Who? A professional dancer? And he named his kid what? WHY?" Also, even without the band association, it's just a stupid fucking name.