Yes sir, Captn sir. That's why we dont' have a TV...no news is good news.
Most people on my floor have a set schedule, and some (by choice) work 4-5 in a row; it enables them to have a large chunk of time off later in the schedule.
I don't have a set schedule, so when they call to tell me when they have available shifts, I make my own schedule, sort of (I am not PRN, I just don't need a set schedule and kind of like mixing it up). I usually don't schedule myself for more than 3 in a row--but I have accidentally scheduled myself for 3 on, one off, 3 on, which was killer.
I'd rather work 4-6 in a row than have the "on-off-on-off" type of schedule, for night shift anyhow.
At our hospital, the official limit for scheduling is 5 in a row. If they are short, though, and they call you in, you can work 6 in a row (overtime is not mandatory, though). We had a nurse once who went 10 in a row on a short stint. He was a single guy, no kids, roommate also worked night shift. He's like "What do I have to do anyhow?" He didn't seem off his game or anything. Just sick of work (but happy with his paycheck) by then end of the run.
Hope that helps!