If there's something I'm excited to use in 2014, it definitely has to be the Steam Controller. Luckily for us, Chris from YouTube channel Trial By Game has his hands on one of the Steam Boxes, and has uploaded a bunch of videos playing various PC games with the Steam Controller.
Using the Steam Controller in Metro: Last Light, a first-person shooter, looks incredible intuitive and slick. It is a far cry from the jumbled mess that thumb sticks provide when playing with console controllers. There are a bunch more videos on the Trial by Game YouTube page, so be sure to check it out. I can't wait to get my hands on the Steam Controller after watching those videos!