Special features: Disc 1: widescreen (1.85:1) and pan & scan (1.33:1) versions; full-length audio commentary by director Chris Wedge and co-director Carlos Saldanha; 3 all-new interactive games; 8 DVD-ROM games/activities.

Special features: Disc 2: "Scrat's missing adventure", all-new animated short; "behind-the-scenes" of "Ice age" HBO special; 6 deleted scenes in English, French & Spanish (with optional director's commentary); 6 production featurettes; "The making of Ice Age" documentary; scene-specific commentary by John Leguizamo as Sid; 3 interactive animated studio; international (multi-language) clip; Scrat's mini promo spots; Blue Sky Studios Oscar winning animated film: "Bunny" (with optional director's commentary); "Ice age" theatrical teasers and trailers.

Lead animators, James Bresnahan, Michael Thurmeier ; editor, John Carnochan ; music, David Newman ; production designer, Brian McEntee.

Voices: Ray Romano, John Leguizamo, Denis Leary, Goran Visnjic, Jack Black, Cedric the Entertainer, Stephen Root, Diedrich Bader.

Twenty thousand years ago, as the Earth was being overrun with glaciers, Manny the woolly mammoth, Diego the saber-toothed tiger, Sid the sloth, and the human baby Scrat become a courageous quartet braving the frozen terrain and embarking on an incredible journey to return Scrat to human civilization.

MPAA rating: PG, for mild peril.

DVD, Dolby digital, 5.1 Dolby surround, Region 1 NTSC ; DVD-ROM: PC with Windows 98 or higher (or MAC with OS 8.6 or higher).

English (5.1 surround), French (Dolby surround) or Spanish (Dolby surround) language soundtracks with optional subtitles in Spanish or English for the hearing impaired.