I threw a couple hundred dollars in and have been splashing around at the $0.25/$0.50 NLHE tables for shits and giggles. PokerStars feels ... pretty much exactly how it felt back when I used to run the Three Rivers Poker Club from this site. (Anyone remember that?!) Setup was a little more complicated than I thought it would be, largely because I had a piece of software on my computer that could allow for remote access. The PokerStars PA client won't run if it detects software that could be used to skirt the "you must be in Pennsylvania" rule. I messaged PokerStars support, and they were able to identify the problem in short order. I deleted the offending software and was sitting at a digital poker table just a few minutes after that.
Right now Pennsylvania residents can only play against other Pennsylvania residents online, across the usual assortment of cash games, sit & go's and bigger tournaments, but eventually the PA and New Jersey player pools are expected to be combined. As for me? I'm up $20 after a few hours of play! Hey, I'll take my small-stakes wins where I can get them.