All Is Bright by Hawkmoth is a gorgeous Christmas story which gets under Mal's skin, and to the heart of the character, amidst great character bits with the whole crew.
Touch also by Hawkmoth threads its way in and out of the episodes and is a lovely and poetic look at Inara's relationship with Mal.
Home Again by scrunchy is fantastic Washfic, which gives a backstory that I can utterly by, and is rife with gorgeous characterisation and love interaction.
Dish Duty by Nicole Clevenger is a stunning Zoe story set after War Stories, which does lovely things with both Zoe and Wash, and Zoe and Mal.
Over and Over and Over by Sarahetc is another lovely little Zoe story which winds its way around and through "War Stories" and examines her relationships with teh two men in her life.
Magical Thinking by Shanna is a nifty little Simon vignette from the TWoP dream challenge which gives Simon what he wants, and then takes it away again.
Calm The Raging River by Cyndy is an interesting look at the differences between Simon and Jayne when it comes to River.
Rock and a Hard Place: Kaylee by dirty diana continues to examine the heartbreak of the little love-triangle diana set up in the first two vignettes.
Off The Map and Seven Seeds by Eleanor K. continues the Things That Haunt Us series, as Simon and Mal go on a date. No, seriously. To Harga's House of Ribs. Seriously! yet more lovely UST and sweet shippy happiness that makes her my fave Mal/Simon writer thus far.