Windows Live Mail - yeah, you may have used the webmail service with massive banner ads everywhere, but have you used the (still in beta) desktop version?
The application is a great way to check your mail, whether it be your normal POP3 or IMAP or your Windows Live Mail account. I admit I have used the software before a few months ago, but then it was in very early beta stages and sucked badly. Now, I don't have to pop open firefox to check my mail.
Oh and by the way, the post title is a quote from Scrubs. (Season 6, episode 12 to be precise.) God I'm sad.
