Recurring Guest Characters Gilbert Gottfried 1 guest appearances Jim Jefferies 1 guest appearances George Lopez 1 guest appearances Penn Jillette 1 guest appearances Teller 1 guest appearances Anthony Jeselnik 1 guest appearances Rain Pryor 1 guest appearances Jeff Ross 1 guest appearances Robert Klein 1 guest appearances Richard Lewis 1 guest appearances Lewis Black 1 guest appearances Russell Peters 1 guest appearances Richard Zoglin 1 guest appearances Marc Maron 1 guest appearances Craig Ferguson 1 guest appearances Kathy Griffin 1 guest appearances Jen Kirkman 1 guest appearances Treva Silverman 1 guest appearances Gail Parent 1 guest appearances Carol Burnett 1 guest appearances ⇤ « 1 2 3 » ⇥