geepondy,
The discs in the TV season count as one DVD each, as common sense would dictate. So you can't get the whole season at once unless you've got a seriously upgraded membership. The standard memembership is 3 DVD's at once. And I have found that the DVD's get back and forth the day after they are put in the mail. So in my case, my wife and I often have one or more DVD's at home that we haven't fully watched. However, the weekends, when netflix doesn't ship, can slow things down to the point that we are waiting a couple or more days for new DVD's. But we're kind of avid watchers of certain TV shows. When we run out of these, I'll probably cancel our memembership.