I also picked up a copy of Jersey Girl for $12; it's the only Kevin Smith film I haven't seen, and I thought it was time to check it out
UPDATE: I watched it and really liked it. It's a bit overly sentimental and utterly predictable, but really funny and sweet. Plus Affleck, Tyler, Carlin and that little girl are all great. But I digress...
Other awesome shows on sale include The Wire, Buffy, Angel, Dark Angel, Battlestar Galactica, Spooks, Weeds, The Tudors, House, Lost, Alias and many, many more (of greatly varying quality). A full list can be found at the JB website, here.
P.S. This post is in no way sponsored by JB Hi-Fi...although I wish it was. Marketing people, drop me an email!