Good stuff in all of them; but of course I can't help having a few favorites.
I already mentioned my wonderful prezzie, "True to Life" by brightknightie, but it bears mentioning again. If anyone's ever built a better historical for FK, I haven't read it.
"A Contradiction in Terms" by hearts_blood: Self-awareness, and self-blindness, and honesty, and Janette cutting through to the heart of things, and foreshadowing, and funny, and several flavors of love. And Pop-Tarts.
"Sugar and Spice" by malinaldarose: Well-plotted casefic, featuring a delightfully-realized Jenny Schanke somewhat ill-advisedly indulging her inner Nancy Drew (or maybe just taking after Dad).
"Health, Food" by celli: Pre-series, Nat makes dinner for Nick. Yes, really. Yes, it's as delightful and cute and faintly bittersweet as you can possibly imagine.
"Stones, Fjords and Umbrellas" by natmerc: Minor characters get the spotlight in a highly entertaining account of Stonetree's introduction to Denise Ford (the psychic in "Dying to Know You").
"Beneath the Surface" by skieswideopen: I'll stick with the author's summary to avoid giving too much away: "Things happen in the background and Schanke never notices...maybe."
"Theory of Lost Things" by leela_cat: Delicate and lovely. Myriad connections to other moments, other people, are just right -- never heavy-handed, just exactly how the mind works. The past is always with us. They made Urs such an intriguing puzzle, and then gave us so few pieces. She deserved to be more than a prettily worried prop, and in this fic she very much is.
These are just my (super-subjective) very very favorites. There are loads of others that are also really, really good. Congrats to the whole crew of participants in the inaugural fest! I'd say it was a smashing success.