Brit filmmaker Matthew Vaughn has been tapped to replace Bryan Singer at the helm of X-Men 3. As of now, Hugh Jackman is the only cast member on board for X3, with Halle Berry, Ian McKellen and Patrick Stewart still in negotiations. So who's Vaughn, you ask? His claim to fame is a little indie drama called Layer Cake, which will be released later this spring. I hear it's pretty tasty.