With news being slow on the weekends, a few weeks ago I started a column called PSA Sunday.  As you can probably deduce from the title, every Sunday we'll post a PSA featuring TV or movie characters and/or celebrities telling you not to do something.  The first few weeks focused on vintage Star Wars PSA’s (the Cantina aliens in a “Friends don’t let friends drive drunk” campaign and C3P0 and R2D2 talking about the dangers of whooping cough) as well as a Transformers PSA from the 80′s that featured Bumblebee talking to kids about running away from home.  For this weekend's article, I've got my favorite Star Wars PSA, which features C3PO and R2D2 warning kids about the dangers of smoking.  Hit the jump to check it out.