Quote: I would think Ewan McGregor, well known as an avid motorcyclist and an "A-Lister" as they say in "The Biz", would be the obvious choice.
Alternate choices might be any of the following celebs known to be motorcyclists:
Hugh Laurie Justin Timberlake Ryan Reynolds Orlando Bloom Matthew McConaughey Moe
(...and if you might have any further questions here Gentlemen, you can find me in Central Casting Offices suite-495 between the hours of 8am-4pm Monday-Friday)
I've seen Ryan Reynolds on a Triumph. Might have been an ad. Nathan Fillion is cool, especially in character as Mal Reynolds.
I could make myself available for the right price.