MailHere 2.0 - The Mail is Here!

Somewhere in the distance, somewhere between my right ear and the temporal lobe (the rest of me is eternal, of course), I can still hear Homer Simpson frenetically shriek "The mail! The mail is here! Ooohhhh"... Ah, yes: MailHere.
MailHere flashes, boings and gets all animated when new messages (in POP or IMAP accounts) come in, but it does it in a classy, unobtrusive way. (Mac)