Unity / Maya - FBX Exporter
If there's anything i've learnt from this Game Jam it's how damn useful the FBX Exporter package is when working with Maya and Unity (presumably 3DS Max as well). Not an artist by any means, but it's a really awesome tool and I highly recommend any Unity / Maya folks working today to check it out if they haven't already. Download it on the Asset Store and plug it in.
Takes a few minutes to get used to but will really help speed up your workflow.