SGA/Avatar crossover, mcshep Banner.
John Sheppard arrives on Pandora hoping for a news live, he doesn't know how much news it's going to be.
He will work with the scientists as protector in the body of an avatar Neas.
He meets the scientific chief of Pandora and fall in love.
Rodney's body avatar appear to be a female named Eisyhn.
When they are Rodney and John they have hot gay sex and when they are Neas and Eisyhn they make love as male and female. So alien and so familiar in the same time.
http://archiveofourown.org/works/4549782 Criminal Minds/SGA crossover here Pairings :
Mcshep, Rodney mcKay/Spencer Reid, Spencer Reid/Aaron Hotchner.
http://archiveofourown.org/works/4526817