At least 90% fresh at Rotten Tomatoes, listed by number of reviews:

Good Night, And Good Luck

Kung Fu Hustle

Capote

March of the Penguins

Wallace & Gromit: The Curse of the Were-Rabbit

The Squid and the Whale

Murderball

Grizzly Man

Tristram Shandy: A Cock and Bull Story

Enron: The Smartest Guys in the Room

The Wild Parrots of Telegraph Hill

Water

Head-On (Gegen die Wand)

Ushpizin

Duma

Travellers & Magicians

Ballets Russes

Darwin's Nightmare

New York Doll

Up for Grabs

After Innocence