Nothing particularly fascinating, but it is worth noting that most of the Jam Packs that can be bought individually for GarageBand (Mac) are already included with Logic Studio.  About the only one that I have noted as missing is “Voices” and probably because it is so new, and missed its inclusion.

I don’t have any experience with Logic Studio (yet – I’m still in the middle of installing it), but Garageband at least was very easy to use, and come up with something royalty free to use as background music.

There are a number of other packages out there that can do the same thing, including Acid and Adobe Audition.  Fun to play with, if nothing else!