Want to know why everyone keeps talking about Dexter? Wondering about that AFI selected program The Big C? Find out for yourself what the buzz is all about when Showtime kicks off 2011 with a free preview weekend.

From January 7 through January 10, the cable channel will allow non-subscribers special access to its programming. In addition to a variety of programs -- including Nurse Jackie, Weeds and United States of Tara -- through the On Demand channel, viewers will also get an opportunity to watch Showtime's "Biggest. Sunday. Ever."

On January 9, Californication -- starring David Duchovny -- will return for its fourth season. That comedy will be followed by the debuts of Episodes (with Matt LeBlanc) and Shameless (featuring William H. Macy). You can preview the two new series above.