Expandable USB Hub Solution?

I recently bought an iMac 24" 2.8 and love it. What I don't love is 3 USB ports (I don't count the 2 on the wired keyboard as they are low power). I have a 4 port Belkin USB 2.0 powered hub I borrowed from my Windows PC. I can continually swap devices but it gets annoying fast. What I'd like:

1.) A larger USB 2.0 Hub (anything out there with 10 or more ports?)
2.) Expandable hubs. I remember Belkin used to make a hub system for the USB 1.0 era that was expandable/stackable with more hubs. I'd love to be able to buy additional hubs and chain them together.

Does anything like this exist? The more I look at usb hubs, the more I wish Apple made a thin, stylish aluminum encased hub.

In case you are wondering why I need so many ports, these are my most frequently used items:

Two 2.5" hard drives (2 usb ports needed each), 3 different usb flash drives, flash memory card reader, laserjet printer, iPod Nano, Segate FreeAgent External Hard disk, a few usb powered gadgets, epson scanner.

I'd never need *everything* plugged in at once, but its nice not having to switch plugs all the time.