It's either heaven. Or blasphemy. But I'm leaning towards the former, especially since there's also a PC involved.
Timofiend has built a machine that combines the guts of an Xbox 360 and a PS3 in the one shell (a PC case). It's not a simple project, but one that just on principle alone is more than worth the hassle. After all, it's the games you should care about, not the soulless corporations selling the machines you play them on, so this just brings everyone a little closer together.
Best part? Since it's essentially just a case housing the repurposed innards of both consoles, it can output both signals at once, giving you a smorgasbord of hot gaming action.
If you'd like to see how he did it, you can check out a very detailed walkthrough below.