One of my personal favorites is Elantris. It's stand-alone, relatively short, and I love the magic system.
The other two I'd advise starting out with are Warbreaker or The Emperor's Soul.
If you love huge series and don't mind jumping into an incomplete, sprawling universe, The Way of Kings just might be your jam. Its scope is at least as wide as the WoT series and is some of his most polished writing to date.