I'm relatively new to Macs as I've only had my Macbook for about two months. What are some good programs to have that improve your Mac functionality? I'm a college student so anything that would be an addition to productivity would be a plus. Also, are there any little useful/interesting little programs that you have on your Mac that you can recommend? I currently only use Safari, iTunes, MS Word, Adium, Transmission, and VLC player on a regular basis.