I only know about Sparky because someone else had asked about it, and that's what the shippers said.

Anyone who uses Brustin needs to be beaten to death. Seriously.

I can't read John with anyone else, either. I tried a few times to read John/Ronon and John/Lorne, because I love Ronon and Lorne, but they just didn't click for me. While I can see Rodney being more sexually available than John, I'm also not that interested in reading Rodney/not-John because, well, they're not John. :P Now, I can read threesome fics with John/Rodney/someone hot, as long as the bulk of the emotional content is between John and Rodney. One of my favorite fics was John/Rodney/Lorne/Parrish. *gets lost in the visual*