Like a lot of people have mentioned above, I have all my Torchwood fic recs tagged here (http://gwynevere1.livejournal.com/tag/fanfic+recs:+torchwood).

If you're looking for nice long stories, in particular, I highly recommend The Place That Didn't Exist (http://ficslasheuse.livejournal.com/2127.html) by slasheuse (NC-17). It's a crossover with Lewis, but all you need to know about that fandom is that it's a British buddy cop show, where the two leads so *clearly* want to be doing it with each other but needed the amazing slash abilities of Jack Harkness to inspire them to take that final step. Otherwise, DI Lewis and DS Hathaway could just be really interesting OCs in a Torchwood fic. (If you do like them, though, you might want to check out the inspector_lewis community.)

Another superb story is Cheating Time (http://www.whofic.com/viewstory.php?sid=15901) by dark_aegis and wendymr (Teen). It's Doctor Who-centric, actually, but Team Torchwood does put in a good appearance. It also makes *wonderful* use of time travel (which I know is one of your kinks), as the Doctor crosses his own timeline, in an attempt to get Rose back. Needless to say, it all ends in tears.