MaxScript: Key Everything
polycounter
Download: https://dl.dropboxusercontent.com/u/2904948/MaxScript/Martinez_Macro_KeyEverything.mcr
The K button in Max will set keys for everything but Biped objects. This is annoying when you are working on a rig that is a mix of Biped and max objects. This is a super simple script called Key Everything I made to replace the K button that can help in these situations. I've been using it for over a year with no issues.
To install drag and drop the MCR file into the viewport, then look in Customize > Customize User Interface > Keyboard > Category > monsterBlues.