I made this free test suite for end users of Luxrender (maybe devs can use it too but I think they have own test scenes)
it's based on cornell box with lot of goodies to stage in it... like boxes, more boxes, spheres, torus... monkey, doodles... prism (crappy one... can somebody check and help please?) and of course a colorchecker too
oh and there are 5 different cornell boxes too... (indoor, outdoor)
there is a documentation in blend file so download and read to know where is what
download here: http://www.mediafire.com/?m4hfmkwmm0y
please leave C&C... maybe we could made something official from this!