I was determined not to become an addict, so didn't watch much of week 1 and only saw BBRM because I had a visitor that wanted to see it. That was enough to reel me in.
There were periods when I missed quite alot due to work or personal committments stacking up. For example I missed lots from Amma and Josh's last weeks. I saw neither of their evictions and only saw the dinner dates on BBRM or through web reports!
I would have been annoyed, but as I also missed Nasty Nick getting caught out last year I was quite grown-up about it.
The last fortnight I became addicted again, and barely left the house/computer.