Watched the first 6 or so episodes, started great but I kinda lost interest after a few episodes.
I agree that some episodes are quite dull, but I still think it's worth watching.
Only just discovered this series from AMC, and I have to say it's quite brilliant. Really enjoying it so far, and the 2nd season has recently started.
http://www.tvrage.com/news/3105/hell-on-wheels-showrunner-departs-new-season-on-hold