Not to be outdone by Vadim’s announcement, I also have one: Percona Toolkit’s manual is now available as PDF (requires registration). You can get it here: http://www.percona.com/software/percona-toolkit/
Thanks to Mauricio Stekl, who did all the hard work to create the PDF of the manual — and did it fast, too.
PlanetMySQL Voting: Vote UP / Vote DOWN