I found my copies of Mrs. Piggle Wiggle and Mrs. Piggle Wiggle's Magic and have been reading a chapter or two to the kids after they're tucked into bed. The boys really like the stories, or at least Pauly does. Roger usually falls asleep.
Friday Pauly and Roger were playing around saying "Mrs. Piggle Wiggle makes us giggle!" over and over again, then Rosemarie started saying "Piggle Wiggle. Piggle Wiggle." She seemed to be having fun saying such a silly thing!