The best thing is actually owning ALL systems and having a collection like this
I also have the PS3, 360, and wii, hooked up to my 61" Samsung HL-S6187, Onkyo 805, and Paradigm 7.1 setup. Oh, and a Tosh XA2.
The old consoles are connected to 4 Pelican Pro 2.0 6 input system selectors (plus a MCM de-modulator swith and 6-way coax splitter for the uber old systems), on 2 11-shelf bookshelves mounted with 4 surge protectors and then fed to a Monster Power 5100mkII.
Now I just need the Philips CD-i, Pioneer Laseractive, and the SNK Neo Geo to finish the collection.
I had to take everything down today to take some pictures though, as I lost my old inventory pictures. So now I get to hook everything back up again... YAY!