Fantastical works as a slick front end for your calendars that also pulls data from apps like Outlook and Entourage for a seamless experience. Just pull it up with a keystroke, start typing event details, and Fantastical will figure it all out for you, creating the event and connecting relevant contacts from your address book. No word on whether or not the price will remain slashed after Cyber Monday ends, so you should get it soon if you don't want to pay $20 for a license.