Dean O’Gorman (Fili), Stephen Hunter (Bombur), John Callen (Oin) from The Hobbit and Mark Ferguson (Elvenking Gil-galad) from The Lord of the Rings were at Brisbane Supanova this weekend. All took part in the Middle-earth Magic Panel.
Here are two videos of the panel posted by Senna W on You Tube. (The picture rights itself and the sound quality improves).
Middle-earth Magic Part 1
Middle-earth Magic Part 2