Hardware Manufacturers that Actively Support Linux?

wirefarm asks: "I know there is are lot of well-supported pieces of hardware for Linux, but I was wondering, which vendors really go out of their way for the community? While tracking down drivers for a wireless PCMCIA card today, I found that the vendor boasted of having Linux support, but it was seemed that they were actually touting drivers that were community-developed, rather than written with any help of the company. So my question is this: Which companies really stand out when it comes to providing specs and developing drivers?"