Google Apps Related:
Dito - A premiere Google partner.  Also the partner I currently work for.  Great bunch of people to work with and for!

Information Technology Related:
None here yet...

Magic the Gathering Related:
Magic Vault - MTG Vault is a great place to design and store your deck ideas, search for cards, and rulings, and even get prices on cards you are looking to buy!

World of Warcraft Related:
Icy Veins - I use this for information on any class rotation questions.  It usually is spot on in letting me know how to maximize the ALT I 
am currently using.