Free software foundation (GNU project) has published a list of 5 reasons to avoid Apple iPhone 3G. According to article Apple puts so many restrictions on you including privacy and DRM limitations:
 iPhone completely blocks free software. Developers must pay a tax to Apple, who becomes the sole authority over what can and can't be on everyone's phones.
 iPhone endorses and supports Digital Restrictions Management (DRM) technology.
 iPhone exposes your whereabouts and provides ways for others to track you without your knowledge.
 iPhone won't play patent- and DRM-free formats like Ogg Vorbis and Theora.
 iPhone is not the only option. There are better alternatives on the horizon that respect your freedom, don't spy on you, play free media formats, and let you use free software -- like the FreeRunner.
With the release of Windows Vista, using your PC to watch and record TV has become a whole lot easier. Now, for the first time, Windows Media Center comes bundled with Home Premium and Ultimate versions of the standard Desktop operating system. However vista is not just costly but buggy stuff loaded with DRM. If you want full control over your Home Theater PC (HTPC), and don’t want to have to pay Microsoft for it, then Linux is a more than capable alternative base for building a system of your own.
My Series 1 TiVo is getting old, so I am planning an escape route based on MythTV, a free software system that turns an old computer into a personal video recorder. This week I tested three MythTV-specific Linux distributions: KnoppMyth, MythDora, and MythBuntu. I found MythDora the best overall fit for my needs -- but there are important distinctions between the three that may lead you to a different decision.
Personally I'm using MythTV under Ubuntu Linux and it worked like a charm.
DRM is technologies intended to give content providers control over redistribution and access to material and is addressed to death in Windows Vista ;) This is a prototype of a video designed to tell the story of DRM. The life and death, the rise and fall, the here today, gone-tomorrow story of DRM. The music is great!