If you're into high fantasy and epic fantasy, you should read The Hobbit (lightweight), then the Lord of the Rings (moderate, depends on the reader) and after those two try The Silmarillion (heavy) and then the Children of Hurin (moderate, depends on the reader). The Hobbit and LoTR are one pretty much, but the other two are not. They are _all_ part of JRR Tolkien's epic fantasy legendarium Arda and are all connected in one way or another. I warn you though, the legendarium is _vast_, there's nothing like it in any way.
By the way, Christopher Paolini's book series is called The Inheritance Cycle. Eragon is the first book of the series.
Songs of Fire and Ice is another great one.
This post was edited by PryoMann on Jun 5 2011 06:05pm