I guess it depends on your perspective. On the one hand, there isn't anything in game play that really exemplifies the Cell processor was a great choice. Bluray has it's advantages in data size and storage and video player but it's a slow drive. The Bluray is also a great antipiracy device, great for the developers and Sony. Having uncompressed audio is nice but not too many people have that kind of setup to get that full effect. I hope that as developers have more time with Cell, we can really start to see it's advantages(which at this time at it's lifecycle, it should be really in this coming year).
But as a multimedia device and hub the Cell and Bluray is an excellent choice.