Split/Second is probably the most fun I've ever had with a video game. Controls feel responsive, everything's fast, hitting opponents with traps is satisfying as hell, and that music on the elite races is some of the most empowering stuff ever. It's not a very challenging game, in fact it's really kinda simple simple, but god damn the presentation and game feel is fantastic.
Gameplay video 1Video 2If watching that gets you interested, know that it's like a hundred times more fun to actually play. It's not on steam, but here's an amazon link for the PC version.
http://www.amazon.com/Split-Second-PC/dp/B002ACEAR0/ref=sr_sp-atf_title_1_1?ie=UTF8&qid=1397772405&sr=8-1Though not quite as exciting, I've also had some fun with Burnout Paradise and Blur, and those
are on steam.