My wife had read Elantris in High School and read the Mistborn trilogy about a year ago. She was freaking out while she read it and I, being way too busy with school, was amused but didn't read it myself. This summer she nudged me to read it again so we went to the library... where there wasnt a single copy, only Elantris. She urged me to read that but I was stubborn that I only wanted to read Mistborn. She grabbed Way of Kings followed by more freaking out and yelling at the book. On our next visit it was the same story: only Elantris, so I caved. Best book I'd ever read. In the two months that followed I read every published Cosmere story, Brandon's annotations, the released chapters of Liars of Partinel and I now own Elantris, the Wax and Wayne Series, and Arcanum Unbounded with plans to get the rest ASAP.
EDIT: Have since bought Way of Kings and I'm picking up Words of Radiance this week