Quick Quiz

What do Star Trek: Voyager, DeGrassi Jr. High, Lost, and Hangin' With Mr. Cooper all have in common?

They all took place in an autistic boy's head!

What?! According to this guy, who obviously has too much time on his hands but is awesome nonetheless, they all take place in Tommy Westphall's head. So who's Tommy Westphall? He's the surprise twist ending in the final episode of St. Elsewhere, when it was revealed that the whole series was nothing but a daydream that took place in Tommy's autistic mind. So how do we get from there to the United Federation of Planets/Canada/The Island/Oakland?

The logic goes like this. At some point, there was a crossover episode between St. Elsewhere and Homicide: Life on the Streets where one of the docs was investigated for murder. Therefore, since Homicide characters interacted with fictional St. Elsewhere characters, it also took place in Tommy Westphall's head. But Homicide had crossovers, too. Those crossovers had crossovers. And before you know it, there are 282 shows existing within the same fictional sphere, all of which are figments of Tommy's imagination. Some are obvious (e.g. all those TGIF shows on ABC that did crossovers all the time), some are less so (e.g. the connection between The X-Files and Buffy the Vampire Slayer, which involves a fictional cigarette brand). It's like a cracked-out version of Three Degrees of Kevin Bacon.

For example:
St. Elsewhere to Lost (Four Steps)
St. Elsewhere's aforementioned doctor was investigated for murder on Homicide.
John Munch from Homicide questions the Lone Gunmen from The X-Files.
The mugshot from the X-Files episode "Titonus" can be seen in the Veronica Mars episode "Leave it to Beaver"
In another episode, the lucky numbers in Veronica's fortune cookie are the Numbers from Lost.

Crazy, huh?