Celebrity Evil Twins

I think I'm pretty good at keeping movie stars straight, but some people confuse them with one another. I am going to list some of the celebrities/movie stars who sometimes get confused with each other by the public. They may not all look like each other but I still hear some people getting them mixed up. I have marked the ones with an asterisk if I think they are a good match.

Kurt Russell and Patrick Swayze
Missy Peregrym and Hilary Swank
Mark Walberg and Matt Damon
Gregory Peck and Carey Grant
Seth Green and Jamie Kennedy
LeeLee Sobieski and Helen Hunt
Nicholas Cage and Andy Garcia
Christopher Walken and Jon Voight
Gary Busey and Nick Nolte
Matthew Broderick and Robert Downey Jr.
Jean Tripplehorn and Marcia Gay Harden
Salma Hayek and Penelope Cruz
Dennis Quaid and Kevin Kostner
Kira Knightly and Natalie Portman
Keanu Reeves and Greg Grunberg
Emma Chambers and Claudie Blakley
Owen Wilson and Ellen Degeneres
Michael York and Richard Chamberlain
Jack Black and Oliver Platt
Will Smith and Robert Horry
Jay Leno and Taylor Hicks
Kyle Korker and Ashton Kutcher
Woody Harrelson and Lance Armstrong
Val Kilmer and Brian Regan
Colin Hay and Christopher Eccleston
Cheryl Crow and Carly Simon
Richard Branson and Wolf From American Gladiators

Elvis Costello and The Verizon Guy
Jack Nicholson and Jack Nicklaus (I know they look nothing alike but everyone has confused them at some time)

Feel free to offer any of your suggestions that I might add to the list.