Seriously, why get a mini when you can buy a refurb 21" iMac with the keyboard and the magic mouse for not that much more expensive?
Other people have addressed this, but for me the decision came to this: My current iMac is a 24" model. I'm not going down in monitor size.
The bundle of Mini stuff I bought was $950 (i5/Radeon mini, kb/mouse, superdrive). Canadian refurb price for the current-gen 27" iMac is $1439. I suppose for $1270 there's an i3, but I don't know if I could bring myself to buy into an older machine like that
The current plan is to use our 37" TV as a monitor. I don't know if that will be suitable for all our computing needs, but for $200, we can get a fairly good 24" screen, bringing our total price to $1150 -- still saving $280.
Ultimately, I squander some power this time around (and yes, some sexy monitor real estate

), but I put myself on a much less expensive upgrade path.
If the price of entry remains around that $800 mark, I can upgrade more frequently than I do with an iMac that runs $1700 new.