Have you ever had to pick up someone else’s project and try to figure out how it all goes together? Or maybe you were trying to delete a level, and Revit just went ahead and deleted all associated elements without telling you?
I found a great tool on the AUGI Forums that actually reports all the elements on a particular level! You can download it at http://forums.augi.com/showpost.php?p=864748&postcount=22 (you need to login to the forums obviously).
To help you install it, check out http://forums.augi.com/showpost.php?p=921396&postcount=36.
I have installed and used it with 2010 and it seems to work fine. Thanks to sfaust!