[Discuss] UEFI

[me at mattgillen.net (Matthew Gillen)]

I realized that my home computers are getting a little long in the
tooth, and I'm looking to build a new one (or two).

A lot of new motherboards come with UEFI BIOSes.  Does this mean
anything to me in terms of linux?  I'm pretty sure I can put it in
'legacy mode' to disable whatever "protection" it's supposed to offer.
 But did pretty much every distro get a signed bootloader so disabling
isn't necessary?

I do intend to dual boot fedora/windows 7 (I have no intention of ever
going to 8).  Is there any advantage to leaving UEFI enabled?

I haven't built my own computer in so long I haven't kept up on stuff
like this.

Has anyone tried to take an existing linux system (non-UEFI) and move it
over to new hardware (specifically, UEFI-enabled)?

TIA,
Matt