McShep in each other's head & Age gap fics

[squawkward.livejournal.com]

(1) Any fics where one of them is in the other's head? Something like the episode Doppleganger?

(2) Where McKay is a lot younger than Sheppard. They can either:

(i) get together when McKay is in his teens or,
(ii) McKay has a crush on Shep since he was a kid, get together when McKay is a lot older after much angst.

Thanks in advance!

(no subject)

[chanel-5.livejournal.com]

Looking for fics where Mckay is super-smart, eg:

He hides his extra smartness so people don't try to kidnap him more often, He has fake identities set up for in case he wants to go into hiding, His jerk personality if fake in order to put off people wanting him to work for them,
He is so smart that the other scientists can't keep up/understand him...

You get the idea.