[lug] Multiboot USB drives?

[Lori Reed]

I'd like the ability to boot various iso's from the same usb flash drive.

This is the only tool I've been able to find that does this:
http://www.pendrivelinux.com/boot-multiple-iso-from-usb-multiboot-usb/

It works well for Linux iso's but not so much for some of the rescue 
cdroms. Also, it's a MS-Win tool, which I'd like to avoid.

Any Linux solutions I'm missing?

TIA,
Lori