Too bad, have to take the Mac to a repair shop. So much easier to do a PC, crack it open, change the HD and away I go.
I understand the Mini can't be open by normal means, need a special flat blade or something.
Your comment is true, and I can certainly understand where you are coming from, coming from a typical do-it-yourself PC background myself, however, there are tradeoffs with certain hardware that I was willing to make.
For example, if you want to be able to replace parts in your Mac, easily (very easily), there is the PowerMac/Mac Pro model. This is comparable to a Dell desktop, for example, in that you can swap out hard drives, RAM, etc, and, frankly, do it far easier (with a Mac Pro) than you can on typical a Dell.
When you talk about the Mac mini, you are talking about a machine that is designed to be small and compact. One can argue that Apple also purposely makes it more difficult to open them up, in an effort to make the computers "throw-away" machines after a certain timeframe (years, frankly). This was the case with the first machines Apple produced in the late 70s (is that date range accurate?), where user expandability was frowned upon by Jobs. That being said, you are talking about the Mac mini, and the small footprint of the device requires certain compromises, like the inability to perform upgrades as easily as you would with a typical desktop. In the case of the mini, customers are getting a tiny, nice-looking machine that performs well enough for them, and the case design matters to these users.
With laptops/notebooks, yes, you can easily swap out the hard drive of a Dell notebook (with many/most models), compared to a MacBook, for example. But, look at the form factor of a Dell laptop compared to the small, sleek MacBook. The only way I know to compare the look of the cases of a Dell (and most other non-Apple notebooks) to a MacBook is to invoke the image of the machine in a wind tunnel. The aerodynamic look of the Apple notebooks is part of their appeal. Again, there is a tradeoff. My iBook looks great, but the hard drive upgrade I performed took a few hours, a lot of extra care, and pages of directions. In the end, I still wouldn't trade it for an easily upgradeable notebook from another company. For me, part of the appeal is the design on the outside. Many users think this is foolish, and I was certainly one of them, but the market has changed. Computers are tools, yes, but they have also become somewhat of an accessory. One could complain that the MacBook Pro model doesn't come with a dual-layer SuperDrive (or didn't when it first started shipping...not sure about now). Yes, that's a drawback, but the thing is so thin that anyone who purchased one clearly looked past that and accepted the tradeoff, rather than waiting for thinner dual-layer drives to be produced by Apple's hardware partners.
Apologies for the rather lengthy reply, but I've heard this complaint from more than one person who, like me, comes from a typical PC background, and, though it is a shame that you can't replace the parts easily on most Mac models, it can be done. The tradeoffs are part of any hardware purchase. More miniaturization means that this might not be such a problem in the next few years, but, for now, it is. (And I'm not apologizing for Apple. I think they could have made the RAM easily upgradeable in the new minis, like it was in the older models, but they didn't. There may be a good reason for this -- I haven't researched why it is the case -- but upgrading RAM should always be easy enough for a child to do without much instruction.)