I caught part of Shakespeare in Love the other day, and it made me realise that something I'd quite like to see is a story in which a man who previously thought himself heterosexual falls in love with a woman disguised as a man and freaks out because he has to reconcile that attraction with his image of himself, then discovers that she's actually a woman and, rather than being immediately relieved, freaks out more because he has to reconcile the new information about her sex with his image of the person with whom he fell in love, who of course was male. I think that would be fascinating.
( And some thoughts on 'The End of Time, Part One', yesterday's Doctor Who special. )