Well!
It's nearly BB5 time, so I might as well comment on my thoughts about the subject
I started watching BB about halfway through the first series (I just missed the whole Nasty Nick affair), and have watched ever season since.
I'm probably going to anger a few ppl here, because my fav series is everybody elses most hated.
I liked BB4 the best, because, in the whole, I thought the ppl where nice and realistic ppl, not a whole bunch of media wannabies like BB3.
Plus the fact, that I thought some of the twists and turns introduced where quite novel. I can however, understand why the vast majority of ppl seem to hate it, and I can only hope that BB5 strikes a balance between BB4 and BB3.
IMO, BB2 is my second fav series, again because of a good mix of ppl, but with a couple of wannabes thrown in. A housemate mix like that would probably produce a good series, as long as the producers get with the program and seriously toughen up.
One of the few things I really liked about BB3 was the fact that BB was quite a bit more formidable and wasn't so nicey nicey with the housemates as (he/she/it) was in BB4.
Anyway!
I think that BB5 should be good, and I hope everybody is pleasantly surprised. I know however, that even if it is the worst series ever, I'm pretty sure I'll still be watching!