I used to really like it, but it kinda jumped the shark quite a while ago and their hilarious faliures just seem so set up and scripted these days. That said I'll probably still watch it because there's sod all else to watch.
I agree that it suffers from over-scripting these days, but that hasn't been a dealbreaker yet. The thing that bugs me more is my love/hate relationship with Jeremy Clarkson. I WISH THAT JAMES RAN THINGS!
Absolutely love that show, but have to agree on the over-scripting, at least in the new series. However, the bit where Jeremy showed of his P45 was just plain awesome. The coming road trip to Africa looks amazing, these parts are always my favorite.