i would add the general atmosphere of the Unix room, especially the very heavy mobile hung from
the ceiling for a while (until someone noticed the cable supporting it was visibly stretching).
also the bowling alley (the corridor that rob, ken, denis, doug and my offices were on) — the pins
were under the printer table at the end. i also recall the time the bowling ball got away from the
Unix room rolling down the main corridor towards a group of visitors led by peter weinberger.
luckily, dave presotto grabbed the ball before anyone got hurt (but it was close).
i would also mention labscam; its not often we see a prank involving rob pike, Penn and a Noble Prize winner.
Similar. Everyone at Bell Labs was so proper. (Except Ken, of course. Ken is sui generis, and a Californian).
Perhaps (probably maybe) I misunderstand. There was nothing "proper" about the Peter face on the water tower, or lock-picking a boot to move it to a patrol car, of Scott Knaur wandering the halls in a Darth Vader costume, or Jellicat wearing a Cats costume, or a thousand other examples. There was a lot of playfulness in the Labs (at least in the early days), and I think it was wonderful.