Before many of these celebs embarked on a career in entertainment, they once had sporting hopes that could have seen them take part in the 2012 London Olympic Games.
But what's the sport world's loss is our gain, as we would be lost without the likes of Britney Spears and Matthew Perry in our lives.
Still, it would've been nice to have gotten a glimpse of George Clooney in lycra.
So check out Team A-List and try to guess which sport these celebs would have played in the London 2012 Olympics.
You might be surprised...