PlanetDreamcast:Part of the Planet family of video game sites by Gamespy. Excellent news and information on the Dreamcast and Sega.
Dreamcast @ IGN: IGN gaming network's website dedicated to news, reviews, previews and cheats on the Sega Dreamcast.
Dreamcaster's Realm: Contains news, reviews, feature articles, message boards and downloads.
Game Revolution Dreamcast Reviews: Reviews of Dreamcast games posted by individuals.
GameZone.com: Dreamcast: News, cheats, codes, reviews, previews, and game information for the Sega Dreamcast
Old Skool Freaks: Small number of reviews for Dreamcast titles.