There's a site called BestFantasyBooks.com, which I'm betting they have monetized (more fools they, if not). Lots of scrolling to get to info, as opposed to a simple list.
#1: A Game of Thrones (George R.R. Martin)
#2: The Malazan Book of the Fallen (Steven Erikson)
#3: The Name of the Wind (Patrick Rothfuss)
#4: Lord of the Rings (J.R.R Tolkien)
#5: The Black Company (Glen Cook) NEW
#6 Gormenghast (Mervyn Peake)
#7: The Blade Itself (Joe Abercrombie)
#8: The Way of Kings (Brandon Sanderson) NEW
#9: The Farseer (Robin Hobb)
#10: Lies of Locke Lamora (Scott Lynch)
#11: The Wheel of Time (Robert Jordan)
#12: Cold Fire Trilogy (C.S. Friedman)
#13: The Long Price Quartet (Daniel Abraham) NEW
#14: The Etched City (K.J. Bishop) NEW
#15: A Sword of Shadows (J.V. Jones)
#16: Acacia (David Anthony Durham)
#17: Elric of Melinbone (Michael Moorcock)
#18: The Darkness That Comes Before (R. Scott Bakker)
#19: Jonathan Strange & Mr. Norrell (Susanna Clarke)
#20: Chronicles of Thomas Covenant (Stephen R. Donaldson)
#21: American Gods (Neil Gaiman)
#22: Abhorsen Trilogy (Garth Nix)
#23: Memory, Sorrow, Thorn (Tad Williams)
#24: Magician: Apprentice and Magician (Raymond E. Feist)
#25: Dresden Files (Jim Butcher)
#20 is the one that kicked me into the fantasy genre. #25 is the one I most look forward to hearing from, these days.
This list really has nobody to recommend it. I'd like to know who the writers themselves most highly recommend.