Mos Def embarked on his hip hop career in 1994, alongside his siblings in the short-lived rap group Urban Thermo Dynamics (UTD), after which he appeared on albums by Da Bush Babees and De La Soul. He subsequently formed the duo Black Star, alongside fellow Brooklyn-based rapper Talib Kweli, and they released their eponymous debut album in 1998. He was featured on the roster of Rawkus Records and in 1999 released his solo debut. Since the early 2000s, Mos Def has been well known for his roles in films such as Something the Lord Made, Next Day Air, The Hitchhiker's Guide to the Galaxy, 16 Blocks, Be Kind Rewind, The Italian Job, The Woodsman, Bamboozled and Brown Sugar, as well as for his portrayal of Brother Sam in the Showtime drama series Dexter. He is also known as the host of Def Poetry Jam, which aired on HBO between 2002 and 2007.