Needlework by zarathuse, Merlin/Arthur - ooh, let me count the ways I love this. Magic. Merlin's father. Bonding. Immortality. And a needle. Also, pitch perfect dialogue and such, such, such good characterization you have no idea. And the plot's wonderful.
Inside Out by frantic_allonsy, Merlin/Arthur - modern AU, and clubbing and funny and awesome. And I do believe Merlin cannot dance, but I would dearly give a lot to see it.
Practical Volitation by allothi, Merlin/Arthur - to say this made me laugh out loud is an understatement. Merlin learns to fly via motivational conditioning. You'd be surprised what he uses as motivation, though.
When Trust Is a Thing Not Given and Water Is Taught By Thirst by aelora, Merlin/Arthur - she also wins for best title of the week on the latter--did I mention I have a thing for titles?--and an intriguing set of stories following along with Merlin's reveal and what comes after.
Practical Adventures and Auspicious Pursuits by stillane, Merlin/Arthur - it starts with goats. I mean, to say I knew by then this would be great is like saying putting my foot in water means I know it will get wet. And then there are spiders. My love for the action/adventure side of Merlin is very, very pure.
Obesiance by casspeach, Merlin/Arthur - in answer to the knee-walking challenge, this one is excellent. Merlin is loaned to another lord during his visit. We do not need to be told it does not go well, because honestly, how could it go right? Cass just does awesome things with this idea, and it's now a regular re-read.
It would probably be overkill to start a new journal specifically for the purpose of housing my recs so I don't have to feel guilty that I am four fandoms behind in updating my rec page? Overkill? No? Maybe?