I love the Mistborn trilogy. Brandon Sanderson really made an interesting world with great characters. I liked the way he took cliches of the genre and altered them slightly to keep me guessing about what was going to happen next. A wonderful series that more people should read. Highly recommended.
The thing that really left an imprint on me was the action. In most fantasy, the action is too vague for me to really get excited. An occasional block, strike, cut, dodge and next thing you know fifty people are dead. Or a vague mixing of elements and energy and lightning is made. Mistborn does not have that problem. Sanderson wrote some of the best fight scenes I have ever read. Technical enough to make it easy to follow what was happening but not too detailed to make it boring. It helps that the magic system was unique and easy to follow. Man, I feel like reading the series again.