I have to respectfully disagree.
For roughly eight years, from 1994 to 2001, Rare was arguably the best studio in the world. Not only were Rare's games from that period imaginative, ambitious, and entertaining; they were also cutting edge in terms of technology. It's still a wonder to me that Rare managed to achieve the lighting, animations, particle effects, and obscenely long draw distances in Banjo-Tooie without help from the expansion pack (although the game did suffer from frame-rate drops).
Moreover, Rare managed to score big in several different genres during its golden age. It made some of the best platformers ever made, including the Donkey Kong Country trilogy and Banjo-Kazooie; it made some of the best shooters ever made, including GoldenEye, Perfect Dark, and Jet Force Gemini; and it made a great Racing game in Diddy Kong Racing. Rare also created one of the most unique games of all time in Blast Corps. Even its lesser games, including Mickey's Speedway USA, are technically sound, challenging, and lots of fun.