Alternate reality episodes of hit TV shows are a fun experience for viewers that often make them fan favorites. Here is CBRs list of the best.
Details in the link below.
https://www.cbr.com/best-alternate-r...ike-urkel-quot
10. "It's Beginning To Look A Lot Like Urkel" Family Matters (Season 4, Episode 10)
09. "The Cooper Extraction" The Big Bang Theory (Season 7, Episode 11)
08. "Road To The Multiverse" Family Guy (Season 8, Episode 1)
07. "Remember Nothing" Xena: Warrior Princess (Season 2, Episode 2)
06. "What Is And What Should Never Be" Supernatural (Season 2, Episode 20)
05. "The Wish" Buffy The Vampire Slayer (Season 3, Episode 9)
04. "The One That Could Have Been" Friends (Season 6, Episode 16)
03. "Flashpoint" The Flash (Season 3, Episode 1)
02. "The French Mistake" Supernatural (Season 6, Episode 15)
01. "Mirror, Mirror" Star Trek TOS (Season 2, Episode 2)