Lassiter attended University of Miami and Temple University and befriended Jeffrey "Jazzy Jeff" Townes, who was in a rap duo with then-musician Will Smith. Lassiter met Smith through Townes, and he later became Smith's road manager. They worked together for two decades. Lassiter briefly worked with other companies including Handprint and The Firm, but he returned to being Will Smith's business partner. Lassiter and Smith formed the production company Overbrook, which produced films like Hitch and ATL. While Overbook had a deal with Universal Studios to produce films, none resulted, and the company was taken to Sony. The pair sought to market each of their productions to a different foreign market, promoting I, Robot in Russia and Ali in South Africa.
|1997||Booty Call||Executive producer|
|2004-2007||All of Us||Executive producer|
|2004||I, Robot||Executive producer|
|The Pursuit of Happyness||Producer|
|2007||I Am Legend||Producer|
|The Human Contract||Executive producer|
|The Secret Life of Bees||Producer|
|2012||This Means War||Producer|
- Holson, Laura M (2006-08-21). "The Fresh Princes of Mumbai". The New York Times.