Stumbled upon — ok, it's not hard to find, really — a neat site:

bestfantasybooks.com

It may serve very well as inspiration for new entries in my ever growing "want to read" list. If the Top 25 list is not enough, there's their honorable mentions, basically Top26-xx. It's not so much about the rankings for me, but there's lots of info on each book / series so I can make up my mind more easily.