Actor Michael B. Jordan, left, sometimes gets confused with TV host Nick Cannon. Jordan, 28, plays a boxer in the upcoming "Creed," a "Rocky" spinoff, while Cannon, 34, was famously married to singer Mariah Carey. Click through the gallery for more interchangeable celebs; some look alike while others are just mistaken for one another because of similar backgrounds or personas.
Michael Buckner/Theo Wargo/Getty Images
Actresses Bryce Dallas Howard, left, and Jessica Chastain "put an end to the confusion" by asserting that despite popular opinion, they are NOT the same person. A parody video that mashed up the pair led to some priceless remixes.
Frazer Harrison / Dimitrios Kambouris / Getty Images
Spanish actor Javier Bardem, left, has been richly rewarded for serious roles in films such as "The Sea Inside" and "No Country for Old Men." Television and film actor Jeffrey Dean Morgan could probably stand in Bardem's place to accept one of those awards, and nobody would be the wiser. Eerie, right?
Stuart C. Wilson / Joe Klamara / AFP / Getty Images
No, Al Pacino, left, and Robert De Niro don't favor each other that much. But who hasn't mistaken one of the great Italian-American actors for the other? The pair first appeared onscreen together in the same scene in 1995's "Heat," to much fanfare.
Hand Out / Ralph Gatti / AFP / Getty Images
With their blue eyes and dark hair, actress-singer Zooey Deschanel, left, and pop star Katy Perry are dead ringers. Honorable mention in this lookalike competition goes to actresses Alexis Bledel and Fairuza Balk.
Ben Gabbe / Joshua Blanchard / Getty Images
It's not so much the dark good looks that trip up observers of actors Dylan McDermott, left, and Dermot Mulroney but those similar Irish-sounding names. Say them three times, fast!
Dave Kotinsky / Frederick M. Brown / Getty Images
Compact yet powerful actors Joe Pesci, left, and Harvey Keitel both have a penchant for playing heavies. Pesci stole his scenes in "My Cousin Vinnie" and "GoodFellas," while Keitel smoldered in "Mean Streets," "Wise Guys" and "Pulp Fiction." Both actors have worked with director Martin Scorsese.
Newsmakers / Peter Kramer /Getty Images
Keira Knightley, left, was cast as a stand-in for Natalie Portman's Queen Amidala in "Star Wars: Episode I" because of their close resemblance.
Kevork Djansezian / Clemens Bilan / Getty Images
Howard and Chastain aren't the only Hollywood redheads who have people scratching their heads. Academy Award-nominated actress Amy Adams, left, looks a lot like comedic actress Isla Fisher.
Jason Merritt / Kevork Djansezian / Getty Images
Matt Damon, left, and Mark Wahlberg both grew up around Boston and have played up Southie accents for film roles.
Frazer Harrison / Jason Merritt / Getty Images
Chad Smith, left, of the Red Hot Chili Peppers and most hilarious man on Earth Will Ferrell sent up their resemblance in a "drum-off" for "The Tonight Show Starring Jimmy Fallon."
David Livingston / Jason Merritt / Getty Images
Stephen Colbert, left, and Steve Carell were both correspondents on "The Daily Show." Their deadpan senses of humor can be hard to tell apart.
Paul Zimmerman / Kevin Winter / Getty Images
"Harry Potter" actor Daniel Radcliffe, left, and hobbit Elijah Wood have elfin good looks that can make the guys hard to distinguish from one another.
Jason Merritt / Kevin Winter / Getty Images
As their long careers in Hollywood continue, actors Gary Busey, left, and Nick Nolte are obviously becoming the same person.
Actor Skeet Ulrich, left, was often deemed "the poor man's Johnny Depp" when he first appeared on the scene. Ulrich has achieved career traction with TV roles on "Jericho" and "Law & Order."
Frazer Harrison / Kevin Winter / Getty Images
Helen Hunt, left, was a teen actress herself, but she seemed to be reincarnated when a young Leelee Sobieski began acting in the '90s.
Frederic J. Brown / AFP / Dimitrios Kambouris / Getty Images
