I've been digging around, trying to find some SGA fic to read, particularly any Keller/McKay fics. Here's one of the best I've come across so far:
Night Ops by
friendshipper As described by the author: When a rescue mission goes FUBAR, McKay and Keller find themselves racing a ticking clock to save Sheppard's life on a lethal, frozen world.
Great fic that is full of action and visceral visuals and deft dealings with the ship. Definitely a must read.