Who Do You Do? (1972)

David Letterman uses mature humor to appeal to his audience in this weeknight series, which gets its music from a house band led by Paul Shaffer. Among the show's most-famous segments are the Top Ten List and Stupid Pet Tricks, the latter of which subsequently led to an additional recurring segment called Stupid Human Tricks.

A late-night live television sketch comedy and variety show created by Lorne Michaels. The show's comedy sketches, which parody contemporary culture and politics, are performed by a large and varying cast of repertory and newer cast members. Each episode is hosted by a celebrity guest, who usually delivers an opening monologue and performs in sketches with the cast, and features performances by a musical guest.

This Hour Has 22 Minutes is a weekly Canadian television comedy that airs on CBC Television. Launched in 1993 during Canada's 35th general election, the show focuses on Canadian politics, combining news parody, sketch comedy and satirical editorials. Originally featuring Cathy Jones, Rick Mercer, Greg Thomey and Mary Walsh, the series featured satirical sketches of the weekly news and Canadian political events. The show's format is a mock news program, intercut with comic sketches, parody commercials and humorous interviews of public figures. The on-location segments are frequently filmed with slanted camera angles.

These half-hour specials showcased some of the best up-and-coming comedians of the moment. The show was a pivotal stepping stone for many of today's stand-up stars.

A half-hour satirical look at the week in news, politics and current events.

Nick Cannon and an A-list celebrity lead a team of improv comedians as they compete against each other.

Key & Peele is an American sketch comedy television show. It stars Keegan-Michael Key and Jordan Peele, both former cast members of MADtv. Each episode of the show consists of several pre-taped sketches starring the two actors, introduced by Key and Peele in front of a live studio audience.

Created by stars Keenen Ivory Wayans and Damon Wayans, this Emmy-winning sketch series offers cutting-edge satire and features a host of talent, including Jamie Foxx, Jim Carrey, David Alan Grier and Tommy Davidson.

Two "Internetainers" (Rhett & Link) go far out and do the weirdest things, giving you a daily dose of casual comedy every Monday-Friday.

The Ed Sullivan Show is an American TV variety show that originally ran on CBS from Sunday June 20, 1948 to Sunday June 6, 1971, and was hosted by New York entertainment columnist Ed Sullivan. It was replaced in September 1971 by the CBS Sunday Night Movie, which ran only one season and was eventually replaced by other shows. In 2002, The Ed Sullivan Show was ranked #15 on TV Guide's 50 Greatest TV Shows of All Time.