Sonic Rush Adventure review at Gamespy.

"Let's face it. Once a top contender for the title of King of the Videogame Hill alongside a certain overall-clad Italian plumber, Sega's anthropomorphic, speed-obsessed mascot has missed a step or two in more recent times. Sonic's progression from the 16-bit era to today has been a bumpy road, leaving a lot of fans with lower expectations whenever a new title is released. And then, just when gamers are ready to give up hope, a great game like Sonic Rush Adventure comes along to stoke the fire again."

Full Source: Gamespy