[equaviator]

When I saw this photo my first thought was that if he flipped the right switch, a long stream of water coming from that metallic-looking thing would hit him in the face.

[cynwoody]

The metallic-looking thing is a paper tape reader. Those yellow things under the console are fan-folded punched paper tapes.

Mr. Russell has gained weight since he developed Spacewar! on that machine (a DEC PDP-1) in 1961.

You can play Spacewar! here, on a PDP-1 emulator written in JavaScript.