Martin Sheen and Kristen Bell ("Veronica Mars") are doing the voices for Arthur Square and Hex.

Based on Edwin Abott's book "Flatland", this is an animated film about geometric characters living in a two-dimensional world. When a young girl named "Hex" decides to "think outside the box" (in a world where such thought is forbidden), her life becomes in danger and it is up to her grandfather to save her life.

The film is due out in May.

If you're looking for other threads about Flatland, try these:

On Privacy

When I see the popular debate repeatedly circling around the same targets, bookending the variously weak and/or alarmist arguments with portentous excerpts from "1984", I am reminded of Flatland.

I must admit that I'm not sure what you're getting at ... I must still be thinking in 2D.

Dark matter highlights extra dimensions

... my head is still spinning a little from this and I think I'm really going to have to go back and read Flatland again to really be able to wrap my mind around (heh) it ...

The Annotated Flatland: A Romance of Many Dimensions

Publisher's Weekly calls it "a math-geek classic!"

The Infinite Matrix | Rudy Rucker and Rudy Rucker, Jr. | Jenna and Me

Rudy Rucker rules!
I dig Rudy Rucker.
I second the recommendation!
I also recommend reading Edwin Abbott's "Flatland" directly.
I love Rudy Rucker.

Flatland: Next-Generation Simulation Visualization, Today

This representation of network and Internet activity brings to mind William Gibson's original vision of cyberspace in the novel Neuromancer.

A Business Proposition From the Fourth Dimension

This tribute to Edwin A. Abbott's classic novel Flatland works wonderfully.

Best Selling Science Books

How many pop-science books have you read?

Edward Tufte: Envisioning Information

This book celebrates escapes from the flatlands of both paper and computer screen ...