I discovered that I've started finding sex scenes boring.

Ugh. Amen to that. It's something I've always felt, from the first time I started reading slash 6 months ago. I find, though, that if the characterizations come right through in the manner in which they're having sex, that's where the magic is. "Insert penis and pump" is not good slash.

This is by mimine, called Pickups (VM/SB/DW). It's impressive.
http://www.livejournal.com/users/mimine/64488.html

And this one, Toy, by beccaming, doesn't even have a sex scene, but it's one of the best mindfucking I've read.
http://www.livejournal.com/community/troy_rps/2036.html