we'll see kirstie alley, pamela anderson, kelly monaco, apollo anton o no. and emmitt smith z shawn johnson is returning and this time partnering with derek hough. >> this is literally teaching thousand walk. and it's kind of exciting to come in the first day and with like oh, we can start now. >> the last cast member was added after being voted in by fans. she's also dancing with a new partner. >> people that danced before have chemistry. so there is a head start. and people expect ep them to have the same chemistry f you're new, no one expects anything. >> melissa rycoft gets to dance with her partner. >> we've done thchl the challenge is being fresh. >> and i am glad. doi think we have to be that much better since the audience has seen melissa ask tony do every routine out there. and so we want to be fresh, too. and so we've kind of been getting creative juices going. >> you've been repaired. do you feel there is a little bit of an advantage? >> this is -- i think everyone is going to be mazing. i know we have a great chemistry. so we've got that. >> and