Digital Arts, PSDtuts, HOW magazine, AIGA website, Abduzeedo, just to name a few.
Color shade generator:
Color palette inspiration:
I frequently visit my design websites such as AIGA, or the Bruce Mau website, and or digital art websites.
I frequently use font websites to find new fonts.
Shorpy, The Selby, Lustik, ACL, Secret Forts, Valet, 10 Engines, Josh Spear, One Trip Pass, Selectism, The Selvedge Yard, Core 77, TED.....
Every possible outlet that any of my very able interns and assistants find.
Architecture blogs, design blogs, google images
We don't visit many, but sometimes we need inspiration so we go to websites with cool little gadgets to see what improvements we can make with ours.
Vimeo, Behance, Pinterest
Dribbble, Pintrest, Freelancefolder.com, freelanceswitch.com, smashingmagazine.com