"4) Share a single mouse and keyboard with multiple computers
with different operating systems, each with its own display, with
support for copy and paste. Thanks to Synergy, the most popular
free KVM software switch out there.
"5) Recovering data from damaged media can be handled by several
Linux tools including some LiveCD, specifically built to help
recover data. Parted Magic, Ubuntu Rescue Remix, SystemRescueCd,
Foremost (data recovery), Ddrescue."