I think this show is actually quite funny. Corolla has a cutting, witty sense of humor. I bet most of the people who are criticizing the humor need other people to tell them what's funny. Watch John Stewart's Daily Show and listen to the laughs. He just makes a stupid face and everyone goes crazy. They must drug their studio audience. Corolla on the other hand turns down the volume of his audience--it's much more realistic.
Also Corollo specializes in intellectual/sarcastic humor (as opposed to humor based on strong emotional reactions). It may not provoke belly laughs, but that doesn't mean it's not funnier than material that does.
Corolla tends to have lower-profile guests: second-tier comedians like Patton Oswald instead of top tier celebrities like Tom Hanks or John McCain. Most people probably don't like this, but it does lower the tension level and make the show more laid back, relaxed, and less like your stereotypical talk show.
Also Corollo specializes in intellectual/sarcastic humor (as opposed to humor based on strong emotional reactions). It may not provoke belly laughs, but that doesn't mean it's not funnier than material that does.
Corolla tends to have lower-profile guests: second-tier comedians like Patton Oswald instead of top tier celebrities like Tom Hanks or John McCain. Most people probably don't like this, but it does lower the tension level and make the show more laid back, relaxed, and less like your stereotypical talk show.