I picked up a couple of PBS new program preview DVDs at BlogHer, and one really stands out as a favorite: Word World.
Word World seems to be designed for early literacy (3 to 5), but 2 year old Ranger laughs each time letters transform into a word. The large colorful characters appeal to Ranger, even if Jim finds them all slightly insect-like with their letter segmentation.
Many of the objects and characters in Word World are composed of the letters that assemble their name. So profiles of the canine reveal D-O-G (left side) or its mirror image (right side). It has upbeat music and stories with lots of humor.
You can check out Word World online and find local broadcast times through PBS Kids' Word World site.