I know you leave them out on purpose - that's the part that kills me (also the part that is infectious, which also kills me but in a slightly different way).

Reunion prompts?

Um, I have no idea what a reunion prompt is - but I'll go out on a limb by assuming that you mean reunions in fic, in which case, Rose/10th Doctor would be good. Especially good if written by someone who can write and is not an angst whore.

D'Argo/Cricthon (but not that way).

Captain Jack/Torchwood

Do these all have to be in the same fandoms?