Deciding Which Crewskills to Pick

To see crew skill bonuses and favorite gifts for your companions, check this out:
http://www.swtor-spy.com/companions/

This is a great guide for picking the best crew skills for your class:
http://www.swtor.com/community/showthread.php?t=132015

More crew skill information:
http://www.swtor.com/community/showthread.php?t=530

Here's a handy chart that shows which other crew skills the crafting crew skills depend on: