I don't watch a ton of reality TV, but, there's one show I really do love... although the only time I've ever heard this show mentioned anywhere else, it always gets bashed, so I realize this is probably an unpopular opinion, but...
King of the Nerds.
Every season they take a bunch of nerds and have them compete in nerd-based challenges, eliminating each other from the game until only one remains to be called the King of the Nerds. Pretty straightforward, right? Most of the hate I see it getting usually revolves around people saying that it's just another oversimplification of nerd culture, or that it just makes fun of nerds and puts them on display to be laughed at, but honestly, I feel like it's the exact opposite.
Probably the most amazing part of the show is the constant acknowledgement that there are different kinds of nerds. Pretty much every contestant has a specialty that's usually listed as a subtitle under their name on-screen, which can range from math/science-based specialties like "neuroscientist", "robotics expert", "mathematician", etc to more fandom-based things like "comic book nerd", "Pokemon master", "professional cosplayer", etc. (Oh, and despite being called "King" of the nerds, they have a good number of female players, too. In fact, the winners of the first two seasons were both girls, with only one guy having won thus far.) The challenges, too, also reflect this sort of mix between things, which I really like. There have also been some really creative challenges -- like one that was supposed to be sort of a cross between Tron and Mario Kart. With the contestants racing actual go-karts while being encouraged to sabotage each other. XD
I will say though that where the more trivia-like things are concerned, it sort of seems like the producers of the show can't quite gauge how difficult any given question is, as every once in a while, absurdly easy ones come up. There was one challenge where the "final question" of a game that would determine who would win or lose between the two competing players was, "What does TARDIS stand for?". Oh, and, to make things even better, it was multiple choice. So that question got a bit of a "Really?" reaction out of me. XD
Sometimes the challenges can be surprisingly cruel, though. Like one time, they delivered electric shocks for wrong answers. O.o And what I found amusing was that one of the contestants whispered to a teammate, "This sounds like the Milgram shock experiment..." And I just had to laugh because I was thinking the exact same thing. XD And that's another thing I like about the show -- you keep hearing contestants say nerdy things that you can laugh along with. For example, one episode featured a sort of murder mystery challenge, and one of the contestants said something like "If there's anything I've learned from Sherlock, it's details, details, details!" and I just couldn't help but laugh at just the thought of her trying to make note of every tiny detail that could help in a very Sherlock-esque fashion the entire time. XD
Also, this is the only reality show where an eliminated contestant can choose for her parting words to quote the last words of her favorite Doctor. Never will you hear that happen anywhere else. XD
Edit: There was also a debate challenge once. Like, a formal debate, with the topic being "Star Wars vs Star Trek". That was bloody brilliant. XD
