My husband and I were newly married back in 1984 when this series first aired. Thursday nights were definitely the "must see" TV people talk about primarily due to this show. We rarely missed an episode and when we weren't going to be home, we recorded it on our VCR (remember those?).
Fast forward many years and with a daughter added to our family, we bought these in 2007 and watched the first three seasons again. Just a few weeks ago, we pulled out season 1 and laughed our way through it and then contintinued on through season 2. This past weekend we finished Season 3 and what a joy it was to know there are five more seasons to go. My daughter is 17, my husband 55, and I am 50 -- a wide range of ages and yet all of us are laughing from beginning to end and appreciating what a comic genius Bill Cosby is. The cast is incredible, the characters full of quirks and personality, the writing is stupendous.
If you haven't seen these before and are looking for good, clean fun give them a try. If you saw these years ago, give them another go since this is definitely a series that has stood the test of time.