In a country that depends on small business for jobs and innovation, John Oliver is rightly disturbed by the wave of corporate mergers that has changed our economy, with everything from airlines and beer to the Web dominated by a few gigantic companies. The result is lousy service, higher prices, fewer jobs, and a worsening concentration of political power.

Oliver goes out of his way to tweak AT&T for its awfulness just as the telecom giant is preparing to merge with Time Warner — which owns his network, HBO. And he cleverly deploys clips of that inimitable Wall Street clown, Jim Cramer.