His Mistborn series is a good place to start. Helped get me back into fantasy/sci-fi after a 15 year hiatus.

Stormlight Archives are his latest and greatest. I'd recommend those if you were a wheel of time fan, or you could start with Mistborn. They're set in the same universe but it's not really necessary to have that background.

I'm currently reading the Stormlight Archives series, planning on continuing with Mistborn when I'm done.