It's a lot to sort through, but it does look nice -- one of the things I've always had problems with is finding reasonably large Apple displays (It wasn't until 2006 or 2007 when I got my first Apple display at larger than 14-inches) so that MCD16 or MS17 in the pile is intriguing to me -- and this will sound odd, but I would definitely go for it to get that PC case at the upper left of the pile of towers, with the sliding door that will cover the drive bays. We had a bunch of machines like that at my high school (Woefully old even at the time) but I always liked the case -- it would be good as a disk box or possibly as a machine on which to run NT4 Server, for some appletalk + SMB file hosting action.

Also if you don't have a modern stationary printer, the laserjet 2100/2200 on the left is less than 20 years old, has cheap cartridges, and if it has a jetdirect, can be printed to by anything under the sun. The LWP600/640 or 16/600PS on the far right side is probably a good catch too -- those use the same carts as the big laserjet 4s, Xerox has a toner cartridge available that's rated for 15,000 pages. Plus, the 16/600PS can also be printed to by just about anything under the sun.

The UMAX and PowerComputing towers in that pile look fairly high-end too, an S900 and probably the equivalent from PowerComputing.