[Jack_]

For people starting out on BBUS I always suggest one of two options, depending on how much you like the format and how interested you are in learning the history of the show which I was.

If you are, I would seriously just watch them chronologically beginning with BB2 (BB1 had a UK format). 2 and 3 whilst old seasons are excellent, 4 and 5 are a little iffy but then you get the amazing BB6 and the brilliance of All Stars for BB7, by which point you know all of the characters. Then 8 is good, 9 mediocre and 10 and 11 excellent once again.

6, 10 and 11 are the go-to seasons though if you wish to dip in to the best seasons and work your way through them randomly, and I think I'd personally suggest starting with BB11. It's recent and had a hell of a load of drama and was pretty gripping from start to finish. BB6 is very good and I preferred the houseguests overall but I think BB11 gives a more up to date reflection of what BBUS is like these days, whereas there are a few things in 6 that they don't do anymore.

It has to be 6 or 11 though, BB10 has a comp early on where a load of ex houseguests return including some winners and that'll just spoil things for you before you've even got started on BBUS. BB11 has one returning player from BB10 but no major spoilers.