Overall, this was a disappointing Sundance in terms of nude scenes.

-Michelle Williams showed her breasts a few times and her ass briefly once in Blue Valentine.

(0:40) A few seconds of her naked boobs while she's in the shower, basically facing the camera, photographed from the stomach up. A few moments later, we see her butt, too, for several seconds, while Ryan Gosling kneels in front of her.

(1:06) We see her left boob when Gosling uncovers it and begins to nibble. In the same scene, as they fool around, we see both of her naked boobs for a few seconds.

http://www.mrskin.com/blue-valentine-girls-t47109.html

Jessica Alba's nudity looks like it is from a body double, but Kate Hudson does briefly show her breasts in The Killer Inside Me.

(1:01) We get brief breasts from Kate Hudson as Affleck takes off her nightgown and she falls back towards us on the bed.

http://blog.mrskin.com/jessica-alba-nude-well-have-wait-little-longer---12910

-Maria Bello briefly shows her breasts in The Company Men.

(0:51) Maria Bello is in bed with Tommy Lee Jones. When he upsets her she sits up on the edge of the bed with her bare back to him. As she moves to put her bra on we see her left breast. Then a quick shot to the front where she is in her panties and we briefly see her breasts before she puts the bra on. She then gets up and walks away in her black bra and panties.

http://www.mrskin.com/the-company-men-girls-t47093.html

-Mr. Skin lists Chelan Simmons has being nude in Tucker and Dale Vs. Evil, but gives no details. Judging by the trailer, it is probably during a skinny-dipping scene. Sadly, Katrina Bowden does not show anything.

Upcoming Nudity-Cinema:

March 26:
-Hot Tub Time Machine (Jessica Paré-Breasts)b>Changed release date
April 9:
-After.Life (Christina Ricci-Breasts and Ass)
June 4:
-Ondine (Alicja Bachleda-Breasts)
June 18:
-I Am Love (AKA Io sono l'amore) (Tilda Swinton-Breasts and Brief Bush)

Upcoming Nudity-DVD:

February 2:
-The Good Sisters (April Monique Burril, Debbie Rochon)
-Zane's Sex Chronicles: The Complete First Season (Christina DeRosa-Breasts;Patrice Fisher,Johanna Quintero,A.J. Khan,Beverly Lynne,Misty Stone-Breasts and Ass;Laila Odom-Right Breast and Ass)
February 9:
-Heist (Dana Fares)
April 6:
-Tetro (Leticia Brédice-Breasts, Ass and Tape Over Crotch;Maribel Verdú-Brests and Ass;Sofía Castiglione-Breasts)
April 20:
-Godspeed (Lynn A. Freedman-Breasts)

Upcoming Nudity-No Release Date:

-Blue Valentine (Michelle Williams-Breasts and Brief Ass)
-The Company Men (Maria Bello-Brief Breasts)
-Lovers of Hate (Heather Kafka)
-The Killer Inside Me (Kate Hudson-Brief Breasts;Jessica Alba-Ass;Probable Body Double)
-Splice (Delphine Chanéac-Breasts)
-Tucker and Dale Vs. Evil (Chelan Simmons)
-Twelve (Emily Meade)
-The Violent Kind (Tiffany Shepis)
-Welcome to the Rileys (Kristen Stewart-Ass in Thong)

Foreign Films Without An US Release Date (A to M):

-Amsterdam (Katja Herbers-Breasts; Marie Vinck-Left Breast Hilde van Mieghem-Brief Breasts)
-Kopf Oder Zahl (Jana Pallaske-Full Frontal)