I believe assembly language programming is pretty common in embedded systems programming and for some performance critical parts of games programming. MenuetOS

I believe assembly language programming is pretty common in embedded systems programming and for some performance critical parts of games programming. MenuetOS is entirely written in assembly language http://www.menuetos.net/ http://www.menuetos.net/ I haven't done any assembly language programming but I enjoy reading about it because it's good to understand what a computer does down deep. Jeff Duntemann's Assembly Language Step-by-step: Programming with DOS and Linux http://www.amazon.com/Assembly-Language-Step-step-Programming/dp/0471375233 http://www.amazon.com/Assembly-Language-Step-step-Programmin... is a great book.