As new film 'Up in the Air' reminds us just why we love heartthrob George Clooney, despite his advancing years, we take a look at the other hunky stars who dare to grey and in turn earn the title of a sexy Silver Fox.

He first stole our hearts as the fresh faced doctor in hit drama E.R. and now he is older and all shades of silver, he is just as tasty, if not more so.

Ravishing good looks, great acting ability and a warm smile – it's almost impossible to understand how such a specimen is still single!