Watch the first 5 minutes of “Weed Vs. Beer” from Lewis Black’s new show “The Root of All Evil” only on Comedy Central. Ah, substance abuse. Though pot remains illegal, is it really worse than beer? Is it more evil to imbibe or inhale your vice? To decide, Paul F. Tompkins and Andrew Daly go head to head in the court of the honorable judge Lewis Black, the ultimate evaluator of evil.