The List: 10 greatest hip hop groups of all time

By
From the The List: 10 greatest hip hop groups of all time edition
Michael Rapaport's Tribe Called Quest documentary "Beats, Rhymes & Life" hits Columbus theaters this weekend. It's a thoughtful look at one of the seminal groups in hip-hop. The genre may have moved toward solo acts and guest spots, but these were the groups that made it matter.