Andrew Ridgeley (of Wham!), member of the SAS

I was surprised to hear that, but it probably isn't the SAS that first pops to mind. It's actually an organization campaigning for safe recreational waters, free of sewage and other forms of irresponsible pollution - Surfers Against Sewage. All kidding aside, that's a very good and worthy cause.

And just in case you don't know who Andrew Ridgeley is, you should check out this video, and if you're old enough to remember it'll come back to you.

[via Wikipedia]