At the moment, there are two different Seona Dancing clips, both of which can be downloaded as avi (DivX), mov (Quicktime), and wmv (Windows Media Player) files. The first is from an episode of Room 101 featuring Ricky Gervais, and the second from a show called Now That's Embarrassing: The 80s.

To view the clips, right click and press "Save Target As" on the clip you want to see.