mini sizing;
"Why not buy the Mac Book and have the best of both worlds?"
But it's not the best of both worlds. Laptops have inferior keyboards, inferior pointing devices, inferior displays, and vastly, hugely inferior hard drives, a weakness the mini shares. And you have to pay for an unneeded battery to boot.
There is an existing mini hard hack to bring the internal Sata port out to an external drive. If I was actually using mine outside the stereo cabinet I probably would do it. I'm not CPU bound, which is why I still have my dual processor Quicksilver 2002 as my main machine.
The mini (as a desktop) could expand to 7.7" by 7.7" by 7.7" (cube II?) and fit very well, as well as matching the Time Capsule. (Time Capsule is about 1.5", so you could even arrange for the stack to could come out to 7.7".) In fact, put an Esata port on both and you have a great home server system. Even Firewire 800 would be fast enough for most current hard drives.
Buy the way; some of you are driving me crazy;
Shinny
another term for shin : : he loved to shinny up that tree.
Shiny
reflecting light, typically because very clean or polished
Definitions available from Applications/Dictionary.