There's no denying that these machines can get incredibly hot when under heavy load. However, under light usage the MBP really is incredibly cool. At the moment I'm just browsing around and doing my email. smcFanControl reports my temperature as 39c with the fans at 1998rpm. The underside of the machine is cool, and only the strip above the keyboard is notably warm. There's a lot of power in this 1" slab of aluminium, it's really quite an achievement. I just wanted to emphasise that when they're only under light load, the new MBP's are lovely and cool and quiet!