I so love this one
i usually come here
but it's not only graphic
always my first stop!
abduzeedo.com has some amazing weekly wrapups. Great selections of different and new work.
I start every day having a look to:
Logopond.com is another good one
I always go to dribbble.com-- but I'm enjoying seeing the others that people have found!
and some tumblrs
Sort behance.com by most appreciated, and go on dribble and start following people you like.
Also i really like: http://maybeitsgreat.tumblr.com/ and http://yalegraphicdesign.tumblr.com/