The Day After Tomorrow - Into Infinity (www.youtube.com/watch?v=xF6YBU0bqR4) is good fun and has good science in it although the end bit is nonsense! Brian Blessed and Nick Tate (Space 1999's Alan Carter) are in it as well.

The way of breaking that monopoly is to replace UEFI on machines with CoreBoot (http://www.coreboot.org/Welcome_to_coreboot). This still does not support enough hardware but given a bit of support from Linux friendly companies (e.g. Clevo, IBM etc) it could be done. To see CoreBoot in action have a look at the Samsung ChromeBook with CoreBoot (http://www.youtube.com/watch?v=RypqMqtTPs8).