Multiple USB HDD via usb hub

Has anyone tried to use a USB hub to hook up multiple HDDs to the Apple TV?

Has anyone tried the iomega mini max 500 or 1tb with atv? I was curious about these drives because they have a nice form factor that is suited for stacking the aTV or MacMini on top of the drive. They also have built in USB hub so I can chain more drives.

Any thoughts?

I have successfully used both a SimpleTech and a Western Digital USB bus powered drives. They are small form factor, and as mentioned, self powered.