They may be every parent's nightmare, but the rap all-stars that comprise the 2000 Up in Smoke tour (smoke, as in blunts and chronic--or marijuana, for the uninitiated) are incredibly popular with a surprising cross-section of young music lovers today. This two-hour-plus DVD captures most of one concert by the four rappers who joined together for this tour: Ice Cube, Eminem, Dr. Dre, and Snoop Dogg. If you aren't a fan of the music, don't expect this to change your mind or even to help you understand these rappers' appeal. For the devoted, however, you get heaping doses of four of the hottest a...