At the recent German 23C3 Hacker Congress, a hooded person apparently gave a presentation in which he showed an Xbox 360 that could run Linux. A King Kong disc was first played on the console and then a Xbox 360 logo, Tux and a old Mac logo were put on the screen. Check it out:
The hooded person (we do not know whether the person is a he or she) did not divulge any details as to how he managed to do it. But a Microsoft product running Linux is quite something.