Methos is disinterested in Duncan, at least in the romantic sense.  But he's fairly well-anchored in his Adam Pierson personality at that point (and yes, that's the personality he constructed for Adam, not his real one, although more of his behavior/attitudes regarding his involvement in the Game/developed over time are close to his real ones than the rest of his attitudes because he hadn't bothered to manufacture attitudes for Adam because he expected to be taken as, at most, a new Immortal), and Adam's a lot more willing to be convinced to be interested in Duncan than Methos is, so there's Duncan/Methos.

But then one day, Joe dies or something, and he decides it's time to move on.  So he turns to Duncan and he goes, "Well, it's been fun.  You can buy me a beer in a couple of centuries."  And Duncan's all confused, because he thought it was True Love, and Adam was Methos's real personality, and Methos has to explain it in small words.

John Watson is a hallucination/a ghost that only Sherlock can see.  People notice that he talks to thin air, but how is that any more bizarre than anything else he does?  And as time goes by, he starts to be...not more normal.  Maybe more accommodating of all of the people who aren't as brilliant as he is?

Highlander- a new immortal learns about the Game and says "dammit, I just lost the game."

A devoutly religious person, who has built most of their life around their religion, is turned into a vampire.  Now they literally cannot do anything having to do with religion- crosses burn them, an invisible force field keeps them from entering churches, etc..  How do they reconcile the two?

Deaged Harry, Ron, and Hermione (like in Trio but younger) are found by Mal, Zoe, and whatever crew they have at the time (none?). At first Mal plans to get rid of them ASAP, but he comes around, at least partly because of Harry's terror of being sent to an orphanage. As in Trio, Harry's not all there, so it's not exactly shocking that he and River get along like two peas in a pod once the Tams come aboard. All three of them act childish most of the time, because except for Ron they didn't when they were young the first time; Ron acts the most mature most of the time.

[River freaks out about Book's hair]
Harry: Don't worry, it only attacks his enemies.

AFS network

AFS is majorly into communication both anonymous and otherwise, since before they become AFS.
Anonymous discussion fora (anon.[whatever]) assign a unique alphanumeric to each account for each thread, so you can see that the same person's been posting over and over in one thread but you have no idea if the same person has posted at all in another thread unless you recognize the writing style; public fora (public.[whatever]) use real names.  Posts can be flagged as unproductive and hide/disappear after they're flagged too much (disagreeing posts aren't flagged, posts like "first" or "ur gay" are).  Mostly it's as horrifying as the internet, just without that kind of unproductive posts.

sites/virtual discussion areas/fora:

• anon.vote (for voting only, no discussion or anything)
• anon.debate (anonymous debate about anything)
• anon.nsfw (several subfora)
• public.announcements (tends to be a mix of official announcements and stuff like "I lost my [whatever], if you see it return it to [person] at [place]" and "Japanese lessons, Fridays at 2 in the mess hall")

What if House was young?  As in pulled a Doogie Howser young.  By the time he becomes head of Diagnostics, he's old enough that people don't look at him funny when he says he's a doctor, but he's still younger than the ducklings.

Unhappy Batman/Superman sex pollen story.  They have sex until it wears off, and then Batman snaps back to being all business while Clark's still trying to bask in the afterglow.
Bruce: "We were affected by some form of pollenated aphrodesiac."
Clark: "...Did you just say sex pollen?!"
And Clark's way confused by Bruce because he can hear that Bruce's heartrate is elevated from still being turned on, but Bruce is acting like it's all just business (he halfway thinks it's Bruce being traumatized, but he literally does not act any different than any other day on the job, either positively or negatively).  And of course he can't get Bruce to talk about it, and works himself up about it because he thinks Bruce is traumatized from the sex (he isn't), and then...something happens, and Clark realizes it's not about him, it's about Bruce's issues and his devotion to the Mission to the exclusion of everything else, and it ends up unhappily but at least they can still work together.

Somebody invents something to make insane people sane.  Bruce gets dosed by accident, and quits being Batman, drops the act in public, gets over his parents' death.  But the effects are only temporary, if relatively long-lasting.

While Bruce Wayne's traveling the world after Chill's trial, he runs into Lily (and James?) Potter, and saves her life.  She puts him in her will to take over guardianship of Harry if she and everybody else die, because he's away from the war and presumably safe from it.  But that's at the beginning of the 7 years he's gone, and obviously she dies before he returns, so the Dursleys get Harry until he returns and learns about it.

Leverage takes a case in Gotham, and there's some issues when it turns out they're using the same frequencies as Gotham's superheroes.

What if Bruce Wayne was deaf?

Batman Begins' Bruce Wayne (and Terry?) find themselves in the past, close to when Batman is still new.

Non-Nolanverse Batman (comics?  DCAU?  The Batman?  Other?) finds himself in the Nolanverse post-TDK.

A story with very relevant POV which keeps switching- eventually the reader learns that the true POV is of an alien hopping from one mind to another, or a mindreader.  And possibly that they're actually the bad guy everybody's been talking about.

God of Life

Character: personification/god of Life.  Very creepy.  Sees it as a game between humans and himself, which he always wins (as in, they die).  "Whenever the gods are playing chess, the only human move is to change the rules. Everything else is defeat."

Something with Xander and Rambo- not, I think, as his costume.
BtVS timeshifted back- after high school, Xander gets drafted (why the name change?).  By the time he gets back, Sunnydale's a crater and he has flashbacks.  Explains the apparent preference for bow and arrow.

Xander is Jack Carter

Xander took on the name of Jack Carter as his alias for when he wanted to pretend to be normal.  He's obviously actually a US Marshall, so maybe that's what demon-fighting falls under or he liaises or something (to be figured out).  And he gets married, has Zoe, and gets divorced.  Then he gets sent to Eureka, which is the same old thing except with science instead of magic and demons.  Eventually a supernatural problem comes up, and he solves it easily while everybody else is still panicking over violations of the laws of physics.  Nobody in Eureka knew about his other life, even Zoe.

Criminals after the apocalypse

After an apocalypse, the survivors band together and don't make a big deal about who did what beforehand- and some of them were Bad People, before.  But it's not worldwide/somebody somewhere has the resources to help, and when the aid starts coming in the outsiders get all "criminals!" about some of them.

Eliot Spencer was a cook in Atlantis.