CrunchBang Linux

CrunchBang Linux is an Debian-based distribution featuring the light-weight Openbox window manager and GTK+ applications. The distribution has been built from a minimal Debian system and customised to offer a good balance of speed and functionality. CrunchBang Linux is currently available as a live CD; however, the best performance is achieved by installing it to a hard disk. 

http://crunchbang.org/download