The three films nominated for the Visual Effects category for the 2008 Academy Awards are:

The Curious Case of Benjamin Button
Eric Barba, Steve Preeg, Burt Dalton and Craig Barron

The Dark Knight
Nick Davis, Chris Corbould, Tim Webber and Paul Franklin

Iron Man
John Nelson, Ben Snow, Dan Sudick and Shane Mahan

The Academy Awards for outstanding film achievements of 2008 will be presented on Sunday, February 22, 2009, at the Kodak Theatre at Hollywood & Highland Center®, and televised live by the ABC Television Network. The Oscar presentation also will be televised live in more than 200 countries worldwide.

A complete list of nominees can be found here.