Thu, 08/01/2024 - 19:30 Tech Insider The cast of "Dimension 20" started out as CollegeHumor comedians. Now their show is a key pillar of the streaming platform "Dropout" — and they're headed to Madison Square Garden for a sold-out, one-night-only show.Dimension 20 Tags Entertainment, dimension-20, madison-square-garden Source These 7 comedians built a business playing 'Dungeons & Dragons.' Now they're ta…