I've actually got a (PCI) weasel - it's more useful for (1) kernel development (2) non-sighted (or simply remote!) access to BIOS settings. It's not nearly as interesting for service oriented hardware, which you hardly ever reboot, and only need to see the BIOS when you're right there changing hardware. (and yes, the weasel cost slightly more than the compgeeks.com celeron box it is installed in :-)
Don't forget the Intel NS1020 "hosting appliance". Serial BIOS, no video at all, and a little LCD front panel with a (regrettably intel-proprietary) UI for setting an initial IP config and root password. Ships running redhat (2.2.16 kernel), but except for the front panel, was easy enough to "upgrade" to Debian... [anyone who actually has one of these boxes and wants it, email me and ask for debian-upgrade-howto and I'll send the rough draft.] On the otherhand, I'd be a customer for a more sane serial bios (the intel one is still a curses-style text-menus interface) or even an Intel-based OpenFirmware motherboard :-)
