I don't know anything about Logic Pro 8, but I do know that my Mac came with Garageband. Which is a pretty fun program, you can record whatever instrument you are playing and it will play back on Garageband and you can then add in some effects to your music. The program already has sounds that can be used to create your own song as well.
Here is my
Macbook
This is what is in my dock:
Photobooth: There is a built in camera where you can take pictures of you and your friends with many picture effects
iMovie HD: You can record your very own video through the built in camera or edit movies that are recorded on your video camera
iPhoto: A simple program where you can edit your photos
iTunes: Came with the Mac and is a program to play your music and videos
iChat: Like a webcam, you can talk to your friends capable of receiving video through this program (I do it all the time with my friends on aim)
Safari: Just another internet program
Dashboard: There are these things called widgets which you can download for free on the Mac site that can do many things. You can listen to music, play a puzzle, look at the weather and watch a youtube video all at the same time.
I've had my Mac for almost a year and I'm still loving it.
Just a reminder, if you're planning on using Photoshop on the Mac then you are going to have to buy it.
In other words, if you used Limewire before to get the Adobe programs, you won't be able to do the same for the Mac.