The 35-year-old actor has spent the past few years starring in independent films and mainstream movies, a far cry from his past blockbusters such as 'Pearl Harbor' and 'Black Hawk Down', reported Contactmusic.
Harnett said he had the opportunity to keep his hit movie streak going, but opted to turn down offers to play some of film's most recognisable characters, including the title role in embattled director Bryan Singer's 'Superman Returns'.
After he turned down those offers, Hartnett said his decision caused a rift between his manager and agents.
"It got to the point where none of us were able to work together."
However, years later he has changed his tune about taking blockbuster-worthy parts, divulging that if he were approached to don a superhero mask today, he would consider it.