The Productive Programmer cover
The Productive Programmer
ISBN: 9780596519544
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zdw · 2010-09-06 · Original thread
For programming, I like "The Productive Programmer"

http://oreilly.com/catalog/9780596519544

And for Sysadmin, it would be hard to beat "The Practice of System and Network Administration"

http://everythingsysadmin.com/