He made his film debut in the romantic comedy Coming Soon (1999) and became known by audiences in the comedy film Dude, Where's My Car? Kutcher appeared in romantic comedies Just Married (2003) and My Boss's Daughter (2003) and, the same year, he created, produced, and hosted Punk'd which aired on MTV for five seasons until its revival in 2012.In 2004, Kutcher starred in the lead role of the psychological film The Butterfly Effect and gained public recognition.After placing first, he dropped out of college and won a trip to New York City to the International Modeling and Talent Association (IMTA) Convention.
At SXSW on March 14, 2015, Kutcher announced Sound Ventures, the successor to A-Grade Investments managing a fund backed by institutional funding.
Kutcher was part of the management team for Ooma, a tech start-up launched in September 2007.
"If anything, I'm a trier," says Kutcher between puffs of filtered Lucky Strikes.
"I think, more than anything, it comes from the fact that my father always had several irons in the fire. If something doesn't work out—if That '70s Show got canceled or if I wasn't going to have a film career—I always wanted to have backup contingency plans.
Kutcher was cast in a series of film roles; although he auditioned but was not cast for the role of Danny Walker in Pearl Harbor (2001) (replaced by Josh Hartnett), he starred in several comedy films, including Dude, Where's My Car? He appeared in the 2003 family film Cheaper By The Dozen as a self-obsessed actor.
In the 2004 drama film The Butterfly Effect, Kutcher played a conflicted young man who time travels.
His debut as the character Walden Schmidt, entitled "Nice to Meet You, Walden Schmidt", was seen by 28.7 million people on September 19, 2011.
The Nielsen ratings company reported that figure was more than any episode in the show's first eight seasons, when Sheen starred in it.
The show ended with a forty-minute series finale "Of Course He's Dead" on February 19, 2015.