To help out people who haven't watched a lot of the earlier seasons, here's a poll on what people think is the best BB season ever excluding the old format used in BB1.
I'll list the winners below to remind people about each season.

BB2 Winner: Will Kirby
BB3 Winner: Lisa Donahue
BB4 Winner: Jun Song
BB5 Winner: Drew Daniel
BB6 Winner: Maggie Ausburn
BB7 Winner: Boogie
BB8 Winner: Evel Dick
BB9 Winner: Adam Jasinski
BB10 Winner: Dan Gheesling
BB11 Winner: Jordan Lloyd
BB12 Winner: Hayden Moss
BB13 Winner: Rachel Reilly
BB14 Winner: Ian Terry
BB15 Winner: Andy Herren

My personal favourite is BB10, but I think BB6 is unbeatable for someone who is looking to watch for the first time. It's really impossible not to be sucked into that season!

BB9 yay.

tbh, every season is great except for BB9 in which the cast is really bad.

My personal favourites are BB6 (great storyline), BB8 (one of the few seasons where the twist worked) and BB10 (amazing cast).

BB10 and BB14

BB10, I actually think Keesha is my favourite housemate ever, random choice I know but I really liked her. Pity she has disappeared off the radar aside from occasionally appearing on Steven's instagram and the like.

I loooooooved Keesha too. I really thought she was a dead cert to return, but as the years go by it gets less and less likely.

Yeah I love Keesha too. Sadly don't think she'll ever return

Yeah and she isn't one of those Grodner pets so I doubt she'll ever be invited back let alone agree to it.

BB 4 was my first, you never forget your first After that it has to be RR's win of course!!

BB5 for me, the Nakomis , Cowboy brother sister twist had me

6 is my personal fave as i loved a lot of the housemates especially Janelle.

Loved some S6 houseguests but just so happened to detest some of the others.