The Justice League and Justice League Unlimited TV series ran on Cartoon Network from 2001 to 2006, featured Superman, Batman, Wonder Woman, the Flash, Green Lantern, the Martian Manhunter and Hawkgirl.

From my prospective, JLU was an adult-themed animated program masking as Y-7 faire featuring seven violent people, who lived violent lives while trying to make the world a better place. They fought enemies who would have been very happy to kill them, but the seven themselves didn't cross that line if there was an alternative. But make no mistake about it, people do die on this show.

The seven also fight each other, not physically, but each hero is a strong willed individual who works in a team environment only because it is necessary to accomplish the mission. They are not "Superfriends," but rather are "Super co-workers." This, to me, was a different and powerful change in team dynamics from the Hanna and Barbera "Challenge of the Superfriends." These relationships are what I write about.

To learn more about this show, visit of the sites listed below. These sites offer information, episode listings, synopsis and images that will blow you away:

The Superman Homepage

Cosmic Teams

The World's Finest

Note: As of May 2007, Justice League was airing in syndication on the Boomerang network.

ETA: During August 2009, Boomerang stopped broadcasting Justice League/ Justice League Unlimited. However, during November 2009, repeats of Justice League Unlimited returned to Cartoon Network.

ETA: On April 2013, Justice League & Justice League Unlimited became available for streaming on Netflix.