What about the original Terry, Terry Brooks (Sword of Shannara, etc.)? His fantasy novels are more along the adventure line (he admits as much himself), but they are nice and thick.
Also, other popular fantasy authors include David Eddings, Raymond Feist, David Gemmell, etc. And of course Tolkien. I've also heard really really really good things about Glen Cook, especially his Black Company series -- and his stuff is being reprinted by Night Shade. (E-book editions of some of his fantasy novels are available through Baen's Webscriptions.)
Oh, and since Robert Jordan wrote a few Conan the Barbarian stories for Tor, I'd recommend the original Conan books by Robert E. Howard. You can find some of the original stories on Project Gutenberg Australia, and they have been reprinted in both print and e-book editions.
Baen has a category for fantasy e-books:
http://www.webscription.net/c-5-fantasy.aspx
Oh, and check out some Baen fantasy on this CD, available legally:
http://baencd.thefifthimperium.com/05-ScepteredIsleCD/
I hesitate to recommend Stephen R. Donaldson's "Thomas Covanent" series. I loved them, many others find them depressing and/or overwritten, and almost everyone hates Thomas Covanent himself. So be warned that you may hate them. Or at least you will hate ol' Tommy.
Edited to Add:
I asked for help in a writing chatroom and got more.

Someone else mentioned the Elric series by Michael Moorcock. The first omnibus is available for free in various editions -- Kindle, Ereader at Barnes & Noble, etc. (See thread here:
https://www.mobileread.com/forums/sho...ighlight=elric)
And the Fafhard and the Gray Mouse series by Fritz Leiber is one of the classics of the fantasy genre. Leiber is the guy who coined the term "sword and sorcery." Even better, they are available as multiformat e-books at Fictionwise. Here is the first one:
http://www.fictionwise.com/ebooks/b1...z-Leiber/?si=0
Other recommendations from the writing chat include Jack Whyte, David Farland, L. E. Modesitt, Jr., and Steven Erikson. If you want looong books and a very involved series, Erikson is your guy.
And in the "I can't believe I forgot this guy" category, what about R. A. Salvatore? My nephew adores him, especially the Drizzt books. He loves loves loves the swordplay. My nephew also likes Stephen Lawhead's fantasy. Some of their books are available in e-book format (DRM versions, however). I think one of Salvatore's books might be available in a free edition for Kindle and/or Ereader?
Can you tell I read a lot of this stuff?