@waday I was VP of a privately owned company for a few years. The President of the company could be a royal jerk. He wanted to take off on Friday afternoons, but didn't want anyone else to. So he'd leave and then call back at various times during the afternoon to check if various members of the management team were still in the office. We all finally had our fill of him, so when he'd leave I'd call the department heads and retire to the conference room for a weekly poker game/happy hour. When he'd call the receptionist would page us and we'd answer. Not sure if someone tipped him off, but one Friday he came back unexpected, and found us all in the conference room. It was hilarious actually, because he couldn't fire all of us, all he could do was slam the door and storm out. The next week he made it known that HE would be in the office on Friday afternoons in the future.
LOL, I love this. My previous supervisor used to do that sometimes. If she worked from home, or if I was going to work from home for some reason, she'd call, IM, or email me occasionally with some non-important issues to see if I was "available".
We have instant messaging, which has our "status" of available, busy, offline, etc. My previous supervisor would track my status, so I changed my settings to have it display available whenever the computer was on. It was pretty oppressive, because if I had to read a report that I printed out or if I was looking at a drawing, she'd see me as "away" since I would be inactive for several minutes. She'd then think I wasn't working.