Went diving through the Mac App store and found some more cool stuff.
PDF Editor - $2.99 way to have a lot of functionality around PDF's.
CalendarBar - puts your calendar in the menu bar, and syncs with facebook to keep-up with birthdays. It also syncs with Google Calendar.
Things - To do list organizer. There are a few out there: Omnifocus and Flow being two others that are really good, but I like the interface and flexibility of Things.
QuarkXPress - This is a mammoth program that allows you to create and format all sorts of things for publishing. PDF's, mailers, magazines, and just about anything else for printing. Quark is easy to use and something to consider if you're not going to buy an Adobe Suite (Photoshop, Illustrator, Acrobat Pro, etc) that comes with InDesign. Adobe's InDesign CS5 is more powerful than QuarkXPress 8, and I actually advise it over Quark (I have Quark and InDesign CS4). However, I like the simple workflow in Quark better.
iVI - if you've ever come across some video files you couldn't play natively on the Mac (like .WMV, .MKV, etc) take this free app for a spin. Also....If you have come across some files that don't play natively, get Perian and Flip4Mac. Edit - looks like this app is now $3.99 ....not sure it is still worth it.
