All of the Overheard sites are good, but I’m partial to the Office one. The headlines are usually the best part. A couple good recent quotes:
But She’s All, “I’m Three Years Old, Daddy!”
Boss: I need her strapped to her desk with a phone in her ear at all times… I need her making money.
We Happily Bring You an Amusing Anecdote Reader’s Digest Won’t
Clerk: God, why is that old man so angry?
Manager: Give him a break. How many more times is he going to be buying new shoes? He’ll probably be buried in these.
Old crab, from across room: I’m not deaf, you bitches!