Didn't start watching until the 1st Eps of Season three... which I have to say were some of the best television I have seen in a long while (up there with season 1 and 3 of the Wire).
So I went back and started watching the older Eps, and I have to say while I thought season 1 was good, it wasn't mind blowing... and the production values were poor. but by season 2 the show had significantly improved its look and its pacing.
While I'd say Breaking Bad has moved ahead of Weeds in terms of quality (which is too bad because the first 2 seasons of Weeds were outstanding)... it is up a lot of really good shows right now. Mad Men, Dexter and has the Pacific made its way on to European TV yet, because the first two Eps of it have been mind blowing.