Michael Owen Rosenbaum (born July 11, 1972) is an American film and TV actor, director, producer and writer. He is best known for his performance in Sorority Boys and for portraying Lex Luthor on the Superman television series Smallville, a role that TV Guide included in their 2013 list of The 60 Nastiest Villains of All Time.
Rosenbaum is also known for portraying Dutch Nilbog on FOX's Breaking In, and voiceover work in animation, such as his role of the Flash in the DC animated universe.
Rosenbaum was born in Oceanside, New York, and raised in Newburgh, Indiana. His mother, Julie (née Eckstein), is a writer, and his father, Mark Rosenbaum, works in pharmaceuticals. He has a brother, Eric Rosenbaum and a sister Laurie Rosenbaum Alton. Mark and Julie later got divorced. Julie remarried sports reporter, Gordon Engelhardt and Mark remarried Alexis Peregrino. Mark and Alexis had two daughters, Ava and Lia. His uncle is pet behaviorist Warren Eckstein. Rosenbaum is Jewish, and was "closer to religion" in New York than in Indiana. Rosenbaum graduated from Castle High School in Indiana and from Western Kentucky University in Bowling Green, Kentucky, where he was a member of Sigma Alpha Epsilon fraternity, with a degree in theatre arts. Immediately after, he moved to New York City to pursue an acting career.
Once in New York, an MTV Networks intern named Vincent Letizia spotted his 8 x 10 black-and-white photo in a batch of other casting submissions for a pilot called "Talk Girl". The pilot was never green-lighted, but Rosenbaum stood out as a newly discovered talent. A new MTV pilot was conceived specifically for Rosenbaum with the working title of "The Michael Rosenbaum Project." The project later became known as "The Temp" and covered Rosenbaum in a reality television setting as a temp, who would walk into a different job each day. The pilot featured Rosenbaum as a Cat filling in on Broadway's "Cats" musical, and as a zoo keeper filling in at the zoo, sweeping animal manure and the like. The pilot never took off with MTV Executives.
In 2001, Rosenbaum received a Saturn Award for his portrayal of Lex Luthor on Smallville. Continuing in the superhero genre, he played Wally West (a.k.a. The Flash) in the DC Comics animated series Justice League, Static Shock, and Justice League Unlimited as well as portraying a younger Wally West as Kid Flash in Teen Titans. In the third season Justice League episode "Great Brain Robbery", Rosenbaum reprised his role as Lex Luthor when his character was trapped in Clancy Brown's Lex Luthor's body. In February 2008, Rosenbaum confirmed that he would be leaving Smallville after season seven of the show, but later returned to the show's final episode.
Rosenbaum has a few notable vocal impressions in his repertoire, including Christopher Walken, Keanu Reeves, and Kevin Spacey. The makers of the DCAU have used these impressions in their work, having Rosenbaum do his Walken voice for Ghoul in Batman Beyond: Return of the Joker and his Spacey voice for Deadshot; coincidentally, Spacey portrayed Lex Luthor in the film Superman Returns, and Walken played Max Shreck in Batman Returns. He filmed the original SyFy comedy series Saved By Zeroes; yet was never picked up. He recurred in Fox's original comedy Breaking In; getting cancelled initially, the show got a second chance, and Rosenbaum was promoted to series regular. Yet the series was cancelled again after a few episodes of the second season.
After many months of speculation and him first turning down the contract to return, it was finally announced on February 11, 2011 that Rosenbaum would return to Smallville for the two-hour series finale, which aired on May 13, 2011 with Rosenbaum reprising his role as Lex Luthor.
In 2014, Rosenbaum made his feature directorial and writing debut with the movie Back in the Day, a comedy where Rosenbaum stars as an actor who returns to his hometown of Indiana for a class reunion. The movie was not only partially based on characters and traditions in Rosenbaum's actual hometown, but was also filmed in Newburgh and Evansville, Indiana where he was raised. Prior to the production of Back in the Day, Rosenbaum planned to direct another comedy film, titled Sorry is For Sissies. The film had a cast including Jon Heder and Colin Hanks, however, at least half of the film's budget was lost, therefore the film was scrapped.
On June 17, 2014, Rosenbaum was cast in a lead role in TV Land's original comedy Impastor. The plot has been summarised as a "low-life who hides out in a small town by conning the residents into thinking he's their newly hired gay pastor".