I knew a guy who worked at one of the national labs that had its own Cray supercomputer, in a computer room with a big observation window that visitors could admire it through.
Just before a tour group came by, he hid inside the Cray, and waited for them to arrive. Then he casually strolled out from the Cray, pulling up the zipper of his jeans, with a relieved expression on his face.
The funny thing is these two guys (Don and I) have known each other via the arpanet since the 1970s. Just a pair of old farts.
I have indeed been to, and spoken at, the CHM, and I have also been in meetings in that very building when it was still SGI HQ.
But I based my comment on having programmed the Cray XMP and YMP at NASA Ames next door to where the CHM is. They were in the "upstairs" machine room in building 262. Officially I have no idea what was in the "downstairs" machine room :-).
