Good Graphic Design Software???

I am using a Mac osX with Snow Leopard and was wondering what good software is out there apart from the obvious stuff like Adobe Creative Suite which I already have.

If anyone knows of any software or nice little apps to make life a bit easier please post here and share your knowledge.
Thanks.

PS: If you know of any other great Mac apps that are not related to graphic design please also post them.
There's a little app for Mac called "Little Snitch" that I would not be able to live without.

Other than CS, hmmmm
If your into SVG [Scalable Vector Graphics] you could try Corel Draw.
Also Corel PaintShop Photo Pro for photo editing.

Don't know if there is a version for Mac though.

3D studio max