To write to one of the cast members, remember to put their names before "Home Improvement" on the envelope. They would love to hear your feedback, let them know how much you appreciate their hard work. However, the cast is very busy and they might take a while to get back to you. (I mean would you rather want them to work on HI and movies or have them spend all their time writing to the fans?) It may take awhile, but they will always get back to you.