octane render is an amazing gpu-exclusive physically based renderer. the reason I love it - no render settings!
the following images are experiments created with octane purely for fun

skull lighting study, feb 2014

study 0000

study 0001

study 0003

study 0006

study 0005

misc octane experiments, late 2012

light study using a basic setup

light study using a basic setup

playing with glass and shallow dof

indirect light study (vehicle from turbosquid)

instancer test - the dust is created with over 16 billion rectangular shapes

instancer test - the grey mass is created with over 16 billion rectangular shapes

interior light study

unfinished project - experimenting with the octane instancer

'fake' fisheye using physically based lens (vehicle from turbo squid)

very first renders with octane (model from turbo squid)