I'm gonna have my new MBP soon, and believe it or not it'll be my first computer with a DVD burner in it... I'm very confused about all the types of DVD media, and was hoping someone here could help demystify it for me and give me some tips. What the heck is the difference from DVD-R, DVD+R, DVD+-R, etc? Which will work best with my new Mac and why? I don't plan on doing anything major with the burner, but I'd like to start using it for backup purposes and also making DVD's in iMovie from home/vacation photos and videos and the like... (I wanna make the cool little presentation type shows I've seen people do, and have it on a DVD to give family/friends). So what do I need for that? Thanks in advance for the help.