To commemorate the 20th anniversary of its release, National Lampoon's Vacation has been fitted out with plenty of bells and whistles for its re-release on DVD. The movie has been given a letterboxed transfer at its original widescreen aspect ratio of 1.85:1, which has been enhanced for anamorphic playback on 16 x 9 monitors. The original English-language soundtrack has been mastered in Dolby Digital Mono, as are alternate audio tracks in French, Portuguese, and Spanish; the disc also includes optional subtitles in English, French, Spanish, and Portuguese. Bonus material includes an introduction from cast members Chevy Chase and Randy Quaid, a "Family Truckster and Roof Rack" featurette, the original theatrical trailer, and a commentary track in which the "Griswold Family" discussing their onscreen adventures with director Harold Ramis.