Moving to Los Angeles in 1995, Kahn became highly sought in the music video industry, eventually working with diverse artists such as: U2, The Chemical Brothers, Gwen Stefani, Blink 182, Eminem, DMX, Wu-Tang Clan, Backstreet Boys, TLC, Britney Spears, Mariah Carey, Aerosmith, Faith Hill, Moby, Jamiroquai, Nelly, Justin Timberlake, George Michael, Kelly Clarkson, Busta Ryhmes, Garbage, Korn, Janet Jackson, Black Eyed Peas, Destiny's Child, and many more.

Today he is credited with launching and expanding the careers of many of his artists, and has collected multiple Music Video Production awards.  He has won several MTV Music Video Awards with nominations for best video for Brandy & Monica "The Boy is Mine", and Brintey Spears "Toxic."  He won his first Grammy for Eminem's "Without Me" video which also won the MTV VMA's Best Video of the Year, as well as Best Director. His video for Muse "Knights of Cydonia" won the Los Angeles Film Festival Audience Award.

In 1999, he started his own production company, Supermega, which is now housed under HSI Productions. He has directed commercials for Acura, BMW, Ford, Vodafone, Budweiser, British Telecom, Miller, Bacardi, Asics, HP, Saab, T-Mobile, Target, Coors Light, Nascar, and Playstation. His Fox/Nascar campaign won a Clio for visual effects.