My sister's sitting on the couch reading the Hobbs books right now. She's pushing them on me.

I of course pushed LOTR/Tolkien, McCaffrey, George R. Martin, and Robert Jordan (WoT) on her. So turnabout's fair play I suppose.

She got me to read Inkheart and Inkspell, which were pretty good (childrens' fantasy).
McCaffrey is second only to Tolkien in my faves list. For a long tosime, they were the only two fantasy authors I could stomach (although I did like
The Forgotten Beasts of Eld by McKillip, and have liked what I've read of hers since).....
The Dragon/Pern series are the best of all McCaffrey's books. Definitely plan on reading them ALL (and some repeatedly). The first to read are the trilogy - Dragonflight, Dragonquest, White Dragon. (not necessarily in that order, I think Quest was first) -- I think the rest branched out from there. I think one of the short story collections out there has a recipe for Bubbly Pies. Mmmm. I want to find that sometime!
I do like the Wheel of Time series by Robert Jordan. Dense, very minute details matter later and it's a LONG series (I think we're up to book 11 or 12 now and more on the way, although the author is ill).... I think most people hit a "bump" somewhere between #4 and #7 in that series, but if you can get through it, the series improves again.
And, the Song of Fire and Ice series by George Martin - up to 4 books now - incomplete at this point - also quite good (although I didn't like the most recent one as much as the others). He's not afraid to kill off characters that you like (!!

) -- and characters change significantly (evolve) as you read the books, so some that you hated in the first book you actually like by the third book, etc.
You will love the Pern books though. And I'm assuming that you've already read LOTR but if you haven't, definitely read it!!