I just purchased it, and we use it to renew our annual passes (pays for itself right there) then a bunch of other times for hotel discounts when available, water park tickets, just now the keys to the kingdom tour, and other fun stuff, worth it to us!
Oh, and the disney vacation club is a great idea/concept, christie and I took the whole tour on it, and for a while there we were like YES LET'S DO THIS.. but then we realized what we almost got ourselves into (still have to buy our REAL house :lol: ) DVC can get expensive, and as often as we go, we'd still have to rent rooms every once in a while.