I have an original LC at work with a PDS ethernet card, running System 6.0.8 very nicely. I can FTP and email just fine but there's no System 6-compatible browser that will play nicely with vBulletin and let me post from it here. (MacWWW will just barely let me use Google).
My PowerBook '98 (WallStreet) is less impressive, relic-wise, except that it's still my latest and greatest
Specs (Image too large to inline elegantly)
It was born with a 300 MHz G3, 128 MB RAM, and an 8 gig HD, and now sports a Sonnet G4/500, 512, and
two internal 7200 RPM Hitachi 60s. PowerBooks of that vintage did not have USB or FireWire and could not support an "expanded" Desktop (you could run an external monitor as a mirror of the TFT, or at a different res at the expense of blacking out the TFT), but it was the last PowerBook to have two CardBus card slots so I have USB via card, nice extended-desktop support via VillageTronic card, and FireWire via card (though obviously not all 3 at the same time). This machine shipped with MacOS 8.1 and still has 8.1 installed on one bootable partition, but can also boot 10.3.8 (my everyday OS), 10.2.8, 9.2.2 (for Classic), 9.0.4, and 8.6. It's old enough it can boot from a floppy (MacOS 8, floppy module in the expansion bay), modern enough to use an external FireWire DVD burner. (It has an 8x MCE CDRW burner in one of the expansion bays, btw). I scan images in from a SCSI 3-pass flatbed scanner and then edit them with The GIMP in my X11 environment.
I'm hoping to see a Paris expo announcement about dual-core PowerBooks, and preferably hard disks that are faster than the 5200 RPM-vicinity. If not...well, this seven-year-old still measures up well against current offerings!