crazy tv crossovers 'SVU' meets 'Arrested Development' and 4 other crazy TV crossoversThe big “Chicago Fire”“Law & Order:SVU”“Chicago PD” crossover event is upon us, kicking off with Tuesday night’s (Nov. 11) episode of “Fire.” 

While it is bound to be an explosive affair, the three shows have already established a shared world, so it’s not necessarily a shock. That, however, is not always the case.

Zap2it has come up with the 5 craziest ones of recent past. Take a look at some of the wackiest show combos to cross paths.

RELATED: ‘Chicago Fire,’ ‘Law & Order:SVU,’ ‘Chicago PD’ crossover planned

1. ‘The X-Files’/’COPS’

At first glance some might wonder how it would be possible to marry a science fiction series with a police documentary, but it happened. “The X-Files” Season 7, episode 12 crossover event featured the “COPS” team following Agents Mulder (David Duchovny) and Scully (Gillian Anderson) as they investigate a neighborhood monster. Although an unlikely combination, the FOX police series provided a “Blair Witch Project” feel, thus creating a breakout episode of “The X-Files.”

2. ‘Arrested Development’/’Law & Order: SVU’

Richard Belzer’s Detective John Munch is the king of crossovers, having appeared on 10(!) different shows. None of them were as bizarre as his “Arrested Development” pop-up. In “Arrested” Munch goes undercover as the teacher of a scrapbooking class set up to trap Tobias (David Cross). Belzer’s background as a comedian served him well in the cameo.

richard belzer munch arrested development law and order crossover ep 'SVU' meets 'Arrested Development' and 4 other crazy TV crossoversRELATED: Kelli Giddish shines in ‘SVU’ hostage showdown

3. ‘Sabrina The Teenage Witch’/’Boy Meets World’

The T.G.I.F. shows crossed paths not just once, but twice in a two-part Halloween episode titled “The Witches of Pembrook” from “Boy Meets World’s” fifth season. Melissa Joan Hart shows up as her character Sabrina to be a potential date for Cory’s (Ben Savage) brother Eric (Will Friedle). The episode also stars a young Candice Cameron Bure as a flighty witch the boys are obsessed with. Salem, Sabrina’s cat, also makes an appearance when he uses his magic to transport everyone into the 1940s, for no seemingly good reason at all.

salem 'SVU' meets 'Arrested Development' and 4 other crazy TV crossovers4. ‘Full House’/’Family Matters’

Have mercy! When Stephanie Tanner (Jodie Sweetin) is feeling bad because she has to get glasses, who better to teach her a lesson about self acceptance than “Family Matters'” overly confident nerd Steve Urkel (Jaleel White)? Not that the crossover was that far-fetched. Steve was apparently visiting his cousin Julie at the the time of the big school science fair. It was beyond random and unnecessary, but weirdly cute at the same time. The moment Steve “takes a walk on the wild side” with Uncle Jesse (John Stamos) is priceless.

5. ‘Power Rangers’/’Teenage Mutant Ninja Turtles’

The possibility of the “Power Rangers” ever crossing paths with the pizza eating, sewer-dwelling “Turtles” is slim to none — but it happened, and in space, no less. The two groups ran into each other when the villainous Astronema used the turtles as a pawn in his potential takeover of the Rangers. After defeating Astronema, the turtles hang out in space with their new friends sans helmets, oxygen tanks and the like. The ridiculous factor is high for this one. Why in the world did this ever happen?

What are the strangest TV crossovers you’ve seen?
Posted by:Sarah Huggins