This NetBSD is interesting for me.
I think I have a machine that will run it. A3000 w/ A3640 (68040-25), GVP Spectrum Video, XSurf Ethernet. I am limited to the original 2/16MB Ram however.
A3000, A3640, GVP Spectrum, XSurf are all supported. However, 16MB of fast RAM is way too small amount to run NetBSD 5. You'll be able to boot the system, but nothing more. Memory will be exhausted very quickly. In reality you need 32MB to do anything useful. ZorRAM memory expanion from AmigaKit is supported, might be a nice choice if you don't want to invest in turbo card.
I am assuming that my FastATA card is not supported which means I will have to revert back to onboard SCSI.
Unfortunately, FastATA is not supported yet. I have a half finished driver, which does not work yet

.
I wonder if the SCSI CD drives sitting in my older powermac 7200-7600's would work?
Yes, it should just work.
Anway, I am interested in this for the sole reason that the Amiga version of NetBSD is up to date and fundamentally on par with other hardware ports. I have attempted Debian Linux on this machine and couldn't make it go. Maybe NetBSD will be a better experience.
Go ahead, try it! In case of any problems, do not hesitate to post to port-amiga mailing list.
Has anyone tried the Amiga specific binaries I saw in NetBSD FTP site? It looked like there were a few useful things in there. I am thinking that this should run well from a command line. I am not sure from X11 standpoint. Has anyone been able to run this? and what are your impressions?
Few days ago I installed NetBSD 5.1 on A600 + ACA630 using binaries on NetBSD FTP site, and these work without problems

. Though, I didn't test X11.