Before the final couple is introduced, Cat reminds us that a bunch of people couldn't make the show but inspired something special. There's a cool montage of a bunch of the choreographers working, and some great dancing from people who both did and didn't make the show. Nigel tells us about the Dizzy Feet Foundation, started by him, Adam Shankman, Carrie Ann Inaba, and ... Katie Holmes? Oh happy day, did I luck into the Katie Holmes episode?? Cat interviews Katie about why she's involved, and Katie thinks it's important for kids to experience dancing, singing, and to grow and have access to the best. Through a number of different interviews we learn that the foundation awards scholarships to underprivileged dancers, and that they will pick ten kids from six studios for scholarships. Mary adds something but oh my goodness, this interview was done pre-Botox and it's utterly distracting, how different she looks -- is Botox your only "secret," Mary? You can learn more about the foundation at Dizzyfeetfoundation.org. Nigel then admits that they've been trying to deny what's coming up but as we all knew from the glorious Internet, Katie Holmes will be appearing on the 100th episode on July 23rd doing a Tyce-choreographed tribute to Judy Garland. I am filled with glee and now crossing off my calendar for July 23! But also, I kid because I love -- Katie will donate her performance fee to the foundation and it seems like a really great cause. I've become a complete and utter softie!

The last couple are Karla and Vitolio, doing the quickstep. Jonathan is looking cuter than ever as he cheers from the audience. Karla is the 35th person tonight to say that this experience has been a rollercoaster. We're taken through Vitolio and Asuka's sucky Broadway, great waltz, and doomed jazz and then through Karla and Jonathan's cha cha, amazing contemporary, and horrific hip-hop. Karla seems to really not be thrilled about her new partner, but she puts on a happier face in rehearsal with Jean-Marc and France. Vitolio is a statue and they will be dancing with top hats and canes, so again the dreaded props. Jean-Marc has a bunch of funny analogies to help them with their form, but so far things aren't going great. The only thing that is coordinated is that Karla's dress and Vitolio's shirt are colored just right to match France's hair.