Now I'm no Bill Palmer, but I think the Mac Mini has some good potential.
First off, I'm glad I sold my G4 Mirror Door when I did. For those who didn't need the expansion of the MD tower, how would they have justified the $1000 price I just got for the G4 on Ebay in November?
As stated above, many people have extra keyboards and mice (and monitors) laying about. I have one or more of each of those things that are doing nothing but taking up space. I really don't think it's that big of deal. Besides, many of the resellers are going to offer a free keyboard and mouse (as stated above). Also, do you remember when the bondi blue iMac 233 came out? People at first scoffed at the lack of 3.5 floppy drive. At first, the resellers gave out free external matching floppy drives. Then, years later (much later than needed), PC companies finally ditched the 3.5 drives too.
Also, as far as the lack of keyboard and mice go, I don't think Apple was being cheap. Look at it this way, the box alone would have to be larger, which means higher shipping charges, extra storage space in warehouses, etc.
Considering what it's really meant to do, I think the Bill Palmers out there are over exagerating the flaws of this Mac. It's not a gaming machine, it's not a "super computer," it's not a G5. Did you really expect it to be for $500?
Heck, I've got a great G5 that does everything for me, but I'm already scoping out the rest of my place to see where the Mini could go. As silly as it might sound, I already have an extra monitor, mouse, keyboard, etc. gathering dust. Why not spend $500 and have another Mac for surfing the web from bed or something. Say, I like that idea...