A lot has already been written on the web about the 2.x version of the Zune software. Most of it is negative, mostly I haven't had a negative experience with the software, but I didn't use the 1.x software for very long before v2 came out.
Recently an update was released bringing some changes that a lot of people should be happy with. For me though the change that I was pleasantly surprised to find is that when you subscribe to a podcast and play an episode, as soon as that episode finishes the Zune will start the next episode in the series. The previous functionality is that it would just keep playing the same episode over and over again. This is a great little feature and has rekindled my practice of listening to podcasts on the train and during my walk to work.