What is the Best Epic Fantasy Series?
What is the Best Fantasy Book or Series You Have Read?
There is also /r/fantasy, and their Top Novels of All TimeWhat is the Best Epic Fantasy Series?
What is the Best Fantasy Book or Series You Have Read?
There is also /r/fantasy, and their Top Novels of All Time
Here are some obscure fantasy threads from /r/fantasy:
On GoodReads:
Scroll down to "popular" there, as that section can not be directly linked to.