Oops T-Mobile did it again

Remember the T-Mobile dance at Liverpool Street Station for their Life’s for Sharing campaign ? Then there was the Trafalgare square karaoke, where they made 13 500 people sing Hey Jude.
Well, it looks like the telecommunications brand is getting specialized in dancing flashmobs. They are back with the Oprah’s Season 24 Kickoff Party, which took place in Chicago 6 days ago :

If you want more details on this T-Mobile action you can have a look on Oprah’s website. Here.
While the concept is no longer original, and one can easily get tired of it, I must admit the images are impressive, especially if you consider this is for a tv show season kick off.
Update: The Youtube video is no longer available due to a copyright claim by Harpo, Inc., we have embedded an approved version found on ViralBlog