1. TGS with Tracy Jordan (“30 Rock”)

For those who can remember back to the pilot of “30 Rock,” Liz Lemon (Tina Fey) was originally in charge of a not-terribly-great sketch comedy series called “The Girlie Show,” but when GE’s new Head of East Coast Television and Microwave Oven Programming, Jack Donaghy made an executive decision to add the completely unpredictable Tracy Jordan (Tracy Morgan) to the show, the comedian’s ego necessitated a change in the show’s title to feature his name more prominently. 136 episodes later, we’ve scarcely seen a single “TGS” sketch in its entirety, and what bits we have seen have rarely been funny (at least not intentionally), but the shenanigans surrounding the series have been consistently hysterical.

2. The Alan Brady Show (“The Dick Van Dyke Show”)

Dick Van Dyke has discussed on many occasions how many TV writers have come up to him over the years and told him that the biggest reasons they decided to break into the business in the first place was because Rob Petrie and his cronies on Alan Brady’s variety show made it look like one of the most entertaining occupations in the world. Strangely, he hasn’t spoken nearly as much about how many of those writers finished their comments by yelling, “Thanks for nothing, you big liar!” I’m betting it’s about 50/50.

By the way, although “The Alan Brady Show” wasn’t real, the folks at MeTV talked Carl Reiner into doing a promo for the addition of “The Dick Van Dyke Show” to their line-up where he reprised the character. Funny stuff.

3. Invitation to Love (“Twin Peaks”)

If you’re not a David Lynch obsessive, you may not remember this soap opera, but those with keen eyes will recall that it turned up at least once in each of the first seven episodes of “Twin Peaks.” It’s also worth noting that “Invitation to Love” pointedly features identical-twin characters played by the same actress, which – in no way coincidentally – was more or less what Sheryl Lee did as Laura Palmer and Maddy Ferguson.

4. The Adventures of Mermaid Man and Barnacle Boy (“Spongebob Squarepants”)

The best bit about this cartoon-with-a-cartoon was the fact that the “Spongebob” show runners reunited former “McHale’s Navy” co-stars Ernest Borgnine and Tim Conway to prove the characters’ respective voices. It doesn’t get much cooler than that.

5. The Terrence and Phillip Show (“South Park”)

Disproving a longstanding theory that Canadians can’t be funny while cementing the not-really-in-question suspicion that farts are always funny, it need only be said that Terrence and Phillip are a stone-cold gas. Sadly, this clip is from their movie, “Asses of Fire,” rather than their series, but it’s basically the same thing. Y’know, except filthier. Much, much filthier.