
When they were interns: Steve Jobs —
When he was just 12 years old, Steve Jobs, the late co-founder of Apple computer, called Hewlett-Packard's president looking for spare computer parts and wound up scoring a summer internship. In 1977, Jobs and Steve Wozniak, co-founders of Apple Computer, debuted the Apple II computer in San Francisco.

Stella McCartney —
British designer Stella McCartney's journey to the top echelons of the fashion industry began with an internship for French designer Christian Lacroix when she was just 16. After graduating college with a degree in fashion design, she interned for a Savile Row tailor, winning fame for her own designs. Her breakthrough role came in 1997, when, at the age of 25, she was appointed creative director of Paris fashion house Chloe, succeeding Karl Lagerfeld.

Anderson Cooper —
CNN's Anderson Cooper had numerous summer jobs and internships as a college student, including a stint in 1986 at the CIA headquarters in Langley, Virginia. He worked at school television network Channel One News and ABC News before joining CNN. In 2003 he became anchor of "Anderson Cooper 360°."

Tom Hanks —
Long before he won his first Academy Award for best actor, Tom Hanks worked behind the scenes as an intern for the Great Lakes Theater Festival in Cleveland. He made his movie debut in "He Knows You're Alone" and landed a lead role on ABC's "Bosom Buddies." Hanks is shown here in 1980.

Betsey Johnson —
American fashion designer Betsey Johnson interned at Mademoiselle magazine after winning a magazine contest in 1964. One year later, she landed the top designer position for Paraphernalia, a clothing boutique that housed the hottest young designers. She's seen here in 1966 on the telephone in her New York studio.

Sean Combs —
Hip-hop mogul Sean Combs, right, dropped out of Howard University for an internship at Uptown Records. He went on to become a vice president at the company and later left to start his own label, Bad Boy Entertainment, in 1993. He's seen here with Lil' Kim and the Notorious B.I.G. in 1995.

Steven Spielberg —
Academy Award-winning filmmaker, director and producer Steven Spielberg interned at Universal Studios. He later went on to direct what's considered the first summer blockbuster, "Jaws," in 1975.

Conan O'Brien —
Talk show host Conan O'Brien was an intern for former U.S. Rep. Barney Frank of Massachusetts. Since then, he's moved up from writing for "Saturday Night Live" and "The Simpsons" to hosting "Late Night," "The Tonight Show" and "Conan." He's seen here in 1990 before becoming the host of "Late Night."

Marissa Mayer —
Yahoo CEO Marissa Mayer was once an intern at Union Bank of Switzerland. After graduating from Stanford, she was Google's 20th hire and climbed the ranks to become vice president of location and local services. She's seen here during the World Economic Forum in Switzerland in 2006.


