http://splitsider.com/2015/10/zach-galifianakis-short-lived-talk-show-late-world-with-zach/

Late World with Zach ran in early 2002 and featured such guests as his future co-star Bradley Cooper (https://www.youtube.com/watch?v=EDTcrKft1dQ) and an interview with Ice Cube (https://www.youtube.com/watch?v=x7ZM0cnKxVo) in the back of a convertible.