I’m a sometime MODO user. There is a recent MODO plugin from HDR Light Studio that is worth commenting on.
HDRLS creates a HDRI with a very cool feature called Light Paint. Light Paint lets you click on the object to tell the plugin where you want the light to appear. You can ‘paint’ highlights on objects and then adjust brightness, reflectivity, etc. with sliders. The lights appear on a grid and you can move them around. Once you’ve tried it (I only have the demo right now) it makes the traditional approach of positioning and ‘aiming’ lights at objects seem cumbersome and very inaccurate. There are a number of plugins for different software packages available (any possibility of a Rhino plugin?) plus a standalone version.
My gut instinct, after playing around with the demo for a couple of hours is that this is the future of lighting.