Three dimensional shapes can be trademark. Product packaging (the Coca-Cola bottle!), building designs (the top of the Chrysler Building!), and even product shapes can all be protected if they are unique and non-functional.
Award trophy shapes can be protected as well. Thanks to Ed Timberlake of Timberlake Law for a recent tweet during the Grammy Awards noting that the Grammy award did not appear to be protected in three dimensions. Which got me thinking about those awards that are protected. Here is a list of well known awards with registered trophy configuration trademarks that I came up with, let me know if you find any others to add (click awards to open USPTO records):