Ask Slashdot: GNU/Linux Laptops?

"I'm an OS X user looking to switch to a Linux laptop. I like the Unix/BSD aspect of OS X. Simple things like when I close the lid the laptop goes to sleep, the sound card works out of the box, long battery life, minimum cooling fan noise, and a comprehensive but relatively straightforward backup system and 'AppleCare' package are important to me. What all-inclusive model of laptop and distro would you recommend?" He didn't mention it, but I am presuming that working Wifi should be on that list too.