Longing and Fighting Dirty by ThatGirlIsabel are two absolutely delightful little snippets of Mal and Kaylee joy that perfectly capture their relationship.
The Hours Inbetween by maystone is a lovely missing scene from "Heart of Gold" which is both insightful and sexy, and she channels Mal perfectly.
A Sorta Fairytale Series by Syn is a very interesting look at how Jayne/River would--or wouldn't--work that takes into account all the things the pairing should, such as how phenomenally wrong it is, yet how much sense it could make as well.
Laid Bare by Sarahetc is a lovely little "missing scene" story set between Ariel and War Stories which builds the tension between Wash and Zoe, and also has some lovely Wash and Kaylee interaction.
Easy by rebecca and Tenderfoot by Juli are two sweet and introspective little Mal/Simon stories which tackle a similar situation, but each has a different feel and pace and take on their relationship.
Ever Get The Feeling by Liss is a gorgeous Simon story set after "Objects In Space," as Simon questions his place on Serenity.
Not Poaching and
Not Sharing by Kate Coyne are combined one lovely look at Wash's relationship with Zoe, and what that means to Mal. Kate just nails Mal's voice, and shows a real affinity for Wash and Zoe as well.
Stages of Grief by Trisana McGraw is a lovely Jayne/Helen coda to "Heart of Gold."
Something Old by eleanor k. is a prequel to Something New and a gorgeous River piece that weaves in and out of the aired episodes, and shows excellent insight into River's relationships with both Simon and Kaylee.
Horatio's Bridge by Chya is exactly how I can see Jayne leaving.