Gamereactor has reviewed The Beatles: Rock Band calling it the most significant game of the decade. Big words.
Here is a quote from the closing paragraph of the review:
"If you think about it, the first decade of the new video game millennia is going to be remembered by its party games and mainstream boom, and how the industry has won huge respect in the popular cultural sphere. Just as an octopus' garden, it's as logical as it is surprising: The Beatles: Rock Band is the most significant game of the decade."