So recently, we have begun upping our game in the BIM department to renderings, animations and you guessed it rendered animations in an effort to bolster our image in marketing and business development. If you haven't yet, I would encourage everyone to take a gander at the rendering tools now in both Revit and NavisWorks if you haven't yet.
There are a couple of sites out there that allow users to sign up for free and download preconfigured lighting assemblies for renderings such as http://lightworks-user.com/ while some of the exterior ones worked great, some of these just ran my machine into the dirt, so be sure to save prior to copying in an .lfa. Also for some reason more libraries are available to you once you create a free account.
That said create an account log in and use someone else's hardwork for once!