The Sentinel is a fun show with the basic premise that some people (Sentinels) have hyperactive senses (sight, hearing, etc, including psychic visions) that let them do all sorts of impressive things but also come with weaknesses that require someone else (a Guide) to help them control.
Canonically, the existence of Sentinels and Guides are not widely known although there are some shadowy government types who have a clue. However, there's a significant subset of the fandom that writes AU stories in which the phenomenon is well known and well documented. I like this variation.
And given that I'm still neck deep in my obsession with NCIS, of course I have an idea for a crossover.
I have this idea that Gibbs is a Sentinel: after all he always seems to know what people are saying, even when they're across the room, knows when people are lying to him, and gets "gut feelings" which are generally dead accurate. So I have this idea that Gibbs is a Sentinel and he knows it. He has always known it and was perfectly fine with it. In fact, Shannon, his first wife, was his Guide.
Then she dies and he suppresses most of his abilities. He attempts to replace her every so often looking for a red-headed woman to marry and it generally goes poorly for all concerned. (That's canon.) But he doesn't tell anyone about his first marriage (again: canon) or being a suppressed Sentinel.
Then Tony DiNozzo arrives.
Tony may or may not know he's a Guide, but it's not a flashy thing, and in canon mostly means he likes people and gets along well with most people. But he is a Guide and he while he doesn't know that Gibbs is a Sentinel, Gibbs certainly knows that Tony is a Guide.
When Gibbs hired Tony, he didn't think it would matter. As time passes however, Gibbs discovers that his senses are beginning to present themselves again. Because he won't actively seek Tony's assistance with them, Gibbs can't use them to their fullest extent, but they're still better than before. Plus, Tony and Gibbs are each able to do things like successfully order and/or beg each other not to die. (Both Sentinel and NCIS canon) So Gibbs is trying to deal with his senses and Tony's presence and having a Guide again without telling Tony that he's been co-opted as Gibbs' Guide in the first place.
It would be oodles of fun and I really want to read this story. If someone knows something similar or writes it up, please let me know.