Another semi obvious one, Eric Bana.
He has races here in Australia when he can, including in support races for the Australian Grand Prix and in Rally events, so one would assume he would have some interest in F1.
On a side note, has anyone seen Bana’s doco ‘Love the Beast’? Its about him restoring the first car that he bought as a teenager and then racing it in the Targa Tasmania. It also stars Jeremy Clarkson, Jay Leno and Dr. Phil. Itís a pretty good film.. :)