“Burden of Truth” – After a member of the President’s staff is murdered, Ellen  urges Duncan (Dylan McDermott)   to back out of the assassination plot, while other members of the President’s staff take matters into their own hands.  Meanwhile, after scouring Nina’s medical records, Ellen finds someone who might be a viable bone marrow donor, on HOSTAGES, Monday, Nov. 25 (10:00-11:00 PM, ET/PT) on the CBS Television Network.  Photo: Jeff Neumann  /Warner Bros. Entertainment Inc.© 2013 WBEI. All rights reserved.
Jeff Neumann/CBS

On Hostages, Dylan McDermott plays Duncan Carlisle, a rogue FBI agent heading up the world's slowest-moving presidential assassination plot. But just the other day, watching an episode of Fox's New Girl, I had a case of celebrity double-vision when Dermott Mulroney showed up in a guest role--McDermott and Mulroney are frequently confused (there's even been an SNL skit about this phenomenon), but they're far from the only ones. Let's take a look at some of Hollywood's most easily mixed-up faces.

Which celebrities do you always get confused? Who did we miss here? Tell us below.