Arthur/Merlin
doomcanary's fics Next Time, I Will Remember This And I Will Say 'No' by paperclipbitch
“Arthur wants you to pretend to be him so that he doesn’t have to get married to Princess Helena?”
~9k, Arthur convinces Merlin to take his place during a trip to a foreign kingdom.
The World Under Heaven, Here All Is Lent by takadainmate
Arthur and Merlin face a sorcerer gone evil. ~20k, epic, hurt/comfort.
Firsts by elandrialore
~1k, cute, The first time Merlin kissed Arthur it was an accident.
Who's Counting Anyway? by phantomjam
Their seduction, like everything else between them, is a contest of wills.
Meteorology by mercurial_wit
~5k, five ways to defuse a prince
Quickening Days by mercurial_wit
~22k, In which dragons & ghosts & prejudices are confronted, Merlin wears a hat (twice) and a dress (once), Arthur breaks some crockery (lots), there are more pranks than pillowfights but at least one of each, and many secrets are revealed.
Lo, An Idiot by little-giddy
Arthur and Merlin (friendship tending to pre-slash). Arthur finds out: dilemma, guilt, a generally surprising lack of emo, Morgana rocks my socks, fluff might happen too.
There Are No Legible Signs by franticsga
"I'm getting you down, idiot," Arthur replied. "Just try not to giggle too girlishly if I tickle you." Massage!fic
Something to Talk About by aleathiel
~2k, Merlin and Arthur go for a ride.
Prophesy by nekare
~7k, In which Merlin dreams, and sometimes, his dreams come true.
I am such a sucker for fic in which Merlin is hurt saving Arthur. <3
A Step to the Left by greensilver
girl!Merlin, one part for each episode
Merlin/Morgana
Crooked Heart by shantirosa
Fate makes for difficult choices, and difficult goodbyes. Set in the not-so-distant future.
Merlin/Morgana, implications of future Arthur/Merlin, Arthur/Gwen and Lancelot/Gwen.