You've already met the season nine cast of Dancing with the Stars via the first official set of ABC photos.

Now, in a two-part video series, all 16 celebrities and their professional partners are saying hello to potential viewers. Even shady politician Tom DeLay comes across as friendly and outgoing in the snippet below.

Check each out now and let us know who you're cheering for when Dancing with the Stars returns on September 21:

[video url="http://www.tvfanatic.com/videos/dancing-with-the-stars-introductions-part-1/" title="Dancing with the Stars Introductions, Part 1"] [/video]

[video url="http://www.tvfanatic.com/videos/dancing-with-the-stars-introductions-part-2/" title="Dancing with the Stars Introductions, Part 2"] [/video]

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.