From the IMDB website:

Cowboy Woody (voiced by Tom Hanks), Andy's favorite bedroom toy, tries to calm the other toys (some original, some classic) during a wrenching time of year--the birthday party, when newer toys may replace them. Sure enough, Space Ranger Buzz Lightyear (Tim Allen) is the new toy that takes over the throne. Buzz has a crucial flaw, though--he believes he's the real Buzz Lightyear, not a toy. Bright and cheerful, Toy Story is much more than a 90-minute commercial for the inevitable bonanza of Woody and Buzz toys. Lasseter further scores with perfect voice casting, including Don Rickles as Mr. Potato Head and Wallace Shawn as a meek dinosaur. The director-animator won a special Oscar for "the development and inspired application of techniques that have made possible the first feature-length computer-animated film."

In the sequel, Toy Story 2, while Andy is away at summer camp Woody has been toynapped by Al McWiggin, a greedy collector and proprietor of "Al's Toy Barn"! In this all-out rescue mission, Buzz and his friends Mr. Potato Head, Slinky Dog, Rex and Hamm springs into action to rescue Woody from winding up as a museum piece. They must find a way to save him before he gets sold in Japan forever and they'll never see him again!

Please enjoy the trailer for Toy Story2: