We are programmed to receive.

I'm not sure I could give you any description of the interactive Flash movie Hotel that would communicate the sheer oddness of it. You don't need sound, but you're only getting half the experience without it. Also, the deeper into it you get, the weirder it gets.

I found it via Screenhead, who include the warning: "Involves some clown penis. But you know, not an outrageous amount of clown penis, it's not like a Saturday night at Jay Leno's or anything, it's a reasonable amount of clown penis." It's about as work-unsafe as the plate on the side of Pioneer 10, if you know what I mean.