As you probably already know, to play a popular Xbox 360 title on the PC you have to hope that the publisher has released a PC version of it and that it supports the use of the Xbox 360 controller. A rumor today - if true - could change all of that. According to an IndustryGamers report, Microsoft is rumored to be working on providing Xbox 360 support to Windows 8 users. The report adds that the system probably won't support cross-platform play between the platforms, and that Xbox Live for PC would probably still require a subscription fee.
On a related note, Engadget has uncovered some Windows 8 source code that references an "Xbox _360_System_Crash." While this proves nothing it probably wouldn't hurt Microsoft to offer that kind of support for Xbox 360 gamers. I know I'd be happy to play some of my favorite 360 games on my PC.
Right now, there's just not enough evidence to consider this any more than a rumor, but we'll keep our eyes opened for new information on this topic and reveal it to you when it becomes available.