He's an Oscar-winning actor and beloved comedian, and he's one of the hottest young actors in Hollywood today. Though their careers were separated by a half century, I say Red Buttons and Joseph Gordon-Levitt were... separated at birth. (The left photo is of Buttons in a publicity shot for the 1957 film Sayonara, which earned him an Academy Award for Best Actor in a Supporting Role.)
One of them was one of the most feared defensive linemen in the National Football League in the 1980s, and was a member of the New York Jets' vaunted New York Sack Exchange. The other is the bassist in the virtual/real death metal band Dethklok, as seen on the show Metalocalypse. The question is... were Mark Gastineau and William Murderface separated at birth?
One of them is a former Special Forces Commando, the other is one of the greatest and most flamboyant frontmen in rock history. The question is... were Bennett (Vernon Wells) from the 1985 Arnold Schwarzenegger action hit Commando and Queen lead singer Freddie Mercury (1980s era) separated at birth?
Here we see Kim Jong-Un, youngest son of the late North Korean dictator and Dear Leader Kim Jong-Il: And Russell from the 2009 Pixar feature film Up:
Minnesota Republican Congresswoman, presidential hopeful and Conservative firebrand Michele Bachmann, as pictured on the August 15, 2011 cover of Newsweek: And Steve Carell as Andy Stitzer in The 40 Year-Old Virgin: Related articles Newsweek keeping it classy in presidential coverage (hotair.com) Newsweek Puts Picture of Michele Bachmann on Cover That Makes Her Look Crazy (gunnyg.wordpress.com) Michele Bachmann Looks, Um, Surprised to Be on Newsweek Cover  (gawker.com) Steve Carell cranks up movie career with films he loves (ctv.ca)
Arizona governor Jan Brewer(R): and Terence Stamp as Bernadette Basinger/Ralph Waite in the 1994 gender-bending romp, The Adventures of Priscilla, Queen of the Desert:
Cy Young award recipient and recent World Series champion pitcher with the San Francisco Giants, Tim Lincecum: and Dazed and Confused protagonist Mitch Kramer (Wiley Wiggins):
Lady Gaga, giving a speech on Monday against the U.S. military's "Don't Ask, Don't Tell" policy: and super-creepy Six Flags theme park spokesperson/mascot "Mr. Six":
Here's just one piece of the endless tidal wave of Hannah Montana-branded garbage currently filling store shelves (snapped a pic of this "tin" at a local Walgreens): And here's the late Cesar Romero as the Joker: