Acredale: Kolor Komiks Kollection by Harold Buchholz
The Adventures of Polo
by Regis faller
American Born Chinese (Roaring Brook/First Second) by Gene Luen Yang.
Babymouse (series by Jennifer and Matt Holm--includes Heartbreaker, Rock Star, Queen of the World, Our Hero, Beach Babe)
Baby-Sitters Club by Ann Martin, Raina Telgemeier
The Bakers by Kyle Baker
Bone (series by Jeff Smith--includes Out from Boneville, The Great Cow Race)
Capstone Press publishes a set of history books & biographies in graphic format. The Battle of the Alamo_, by Matt Doeden; _The Sinking of the Titanic_, by Matt Doeden; _The Curse of King Tut's Tomb_, by Michael Burgan.
(Available in English and Spanish.)
Captain Underpants
The Courageous Princess by Rod Espinosa
Dance: A Ballerina's Graphic Novel (S & S/Atheneum/A
Richard Jackson Bk) by Siena Cherson Siegel
Lions, Tigers, & Bears by Mike Bullock, Jack Lawrence
Little Lit (Mouly, I think). (Have heard of but have not read)
Warrior: The Lost Warrior by Erin Hunter
Mar (spelled with an umlaut over the "a" and pronounced like "mare"), Naruto, One Piece, Rave Master and Dragon Drive.
Patty Cake And Friends
by Scott Roberts
Phonics Comics (series of different titles by Scholastic--includes titles like The Sparkplugs, Duke and Fang, The Misfits--awesome for grades 1/2)
Ricky
Sardine in Outer Space by Emmanuel Guibert, Joan Sfar
Spiral-Bound by Aaron Renier
Graphic novel versions of classic novels - Black Beauty, Moby Dick. Capstone also has a series about historical events and biographies -- my kids like the Titanic one, some of the historical war ones, and Clara Barton.
see also: picture books with graphic novel traits -
http://www.cedu.niu.edu/~fiehn/GNElemSchool.html