Avant Window Navigator already has some menu applets, but none as good as MintMenu.
But now you can use MintMenu in AWN, thanks to Neelance who maintains a PPA for MintMenu AWN applet which you can install (Ubuntu Lucid and Maverick; should work in Linux Mint) using the following commands:
sudo add-apt-repository ppa:neelance/awn
sudo apt-get update
sudo apt-get install awn-mintmenu
You'll also need the regular MintMenu installed (<-- click for installation instructions) to be able to use this!
Then add the MintMenu applet to AWN. If it takes too long for the menu to load, quit AWN and start it again (this is a known issue that occurs sometimes as noted in the PPA description).
A big thanks to Kevin McDole for sending us the tip!