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 version of Wally West as
Kid Flash in
Teen Titans. In the third season
Justice League Unlimited episode "The Great Brain Robbery", Rosenbaum reprised his role as Lex Luthor when Wally and Lex Luthor temporarily switched bodies. In February 2008, Rosenbaum confirmed that he would be leaving
Smallville after the seventh season. After many months of speculation and him first turning down the contract to return, it was 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 2012, Rosenbaum appeared in
Hit and Run, which starred
Dax Shepard and
Kristen Bell. Rosenbaum portrayed the character Gil, a jealous ex-boyfriend from Annie's (Bell's character) past. Rosenbaum provided the voice work for
Ghoul in the animated
DCAU film
Batman Beyond: Return of the Joker. Rosenbaum filmed the original
SyFy comedy series
Saved By Zeroes; yet was never picked up. He recurred in
Fox's original sitcom
Breaking In; the show was cancelled initially after the first season but got a second chance, and Rosenbaum was promoted to series regular. The series was cancelled again after a few episodes of the second season. In 2014, Rosenbaum made his feature-film directorial and writing debut with the comedy
Back in the Day, starring as an actor who returns to his hometown in Indiana for a class reunion. The film was filmed in Newburgh and Evansville, Indiana. 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,
Colin Hanks and
Jennifer Love Hewitt; however, at least half of the film's budget was lost, and the film was scrapped. On June 17, 2014, Rosenbaum was cast as the lead in the
TV Land original sitcom
Impastor. The plot has been summarised as a "low-life who hides out in a small town by conning the residents into thinking he is their newly hired gay pastor". In 2017, Rosenbaum served as narrator for the
reality television show
Hunted which pitted investigators against teams of ordinary citizens trying to evade capture as fugitives. Rosenbaum also starred in the Indie thriller
The Neighbor opposite William Fichtner. In 2018, Rosenbaum debuted his casual celebrity interview-based podcast called
Inside of You. His first guest was his
Smallville co-star
Tom Welling. The two subsequently launched the podcast
Talkville in July 2022, where they re-watch every episode of
Smallville. Rosenbaum reprised the role of Martinex in
Guardians of the Galaxy Vol. 3, which premiered in May 2023. On January 6, 2023, Rosenbaum's band Sun Spin released their second album,
Never Is What it Is. In October 2023,
Los Angeles Daily News reported that Rosenbaum and his longtime friend
Jon Heder would star in the horror-themed
reality television series
Scared with Michael Rosenbaum and Jon Heder. Rosenbaum said of the project, "I wanted to do a reality show because we love horror movies. We'll go to the scariest places on Earth." In 2024, Rosenbaum was the lead actor in the audio series
TRUE NOIR: The Assassination of Anton Cermak. The series was penned by
Road to Perditions
Max Allan Collins. ==Filmography==