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

The Lord of the Rings: The Return of the King

Finding Nemo

Lost In Translation

School of Rock

American Splendor

Shattered Glass

Cidade de Deus (City of God)

The Station Agent

Capturing the Friedmans

The Magdalene Sisters

Whale Rider

The Triplets of Belleville

The Fog of War - Eleven Lessons from the Life of Robert S. McNamara

Dirty Pretty Things

Winged Migration (Le Peuple Migrateur)

L' Homme du Train (The Man on the Train)

Raising Victor Vargas

Baadasssss!

Lost in La Mancha

Io non ho paura (I'm Not Scared)

Spring, Summer, Fall, Winter... and Spring

Sweet Sixteen

The Return (Vozvrashcheniye)

Saraband

Festival Express

Bus 174 (Ônibus 174)

Stevie

The Best of Youth (La meglio gioventù)

To Be and to Have (Etre et Avoir)

The Alien Saga

Chavez: Inside the Coup (The Revolution Will Not Be Televised)

Los Angeles Plays Itself