yes
Yes, it is. Any type of MacBook that comes out now is a Mac OS X. The most recent version of Mac OS X is Mac OS X Lion, coming out soon.
You have to buy Mac OS X 10.5 Leopard from the store - you cannot download it from anywhere (that would be illegal).
The operating system for the MacBook Pro is Mac OS X. The current version of Mac OS X is 10.6 which is also known as Snow Leopard. The next version will be 10.7 which is known as Lion.
All new Macs have Mac OS X 10.6 (Snow Leopard) installed.
The Mac OS X version of Football Manager 2009 will run on a MacBook.
It's possible that the Mac OS X version that is installed on your MacBook does not meet the minimum system requirements for iTunes 9. The minimum compatible version of Mac OS X is 10.4.11. If your MacBook has not been updated to at least that version, just run Software Update ( -> Software Update...) until you're running 10.4.11. To tell what version of Mac OS X you're running, go to  -> About This Mac.
There are apps that will only work with Mac OS X which can be on any Mac computer - iMac, MacBook, Mac Mini etc.
MacBook Pro comes with macOS, the most advanced desktop operating system in the world. macOS is designed to take full advantage of the powerful hardware in every Mac, and to deliver the most intuitive and seamless experience possible. You can buy MacBook Pro from: Microprokey
The most popular operating systems that can be uses on a MacBook include: Mac OS X 10.4 (Tiger), Mac OS X 10.5 (Leopard), Mac OS X 10.6 (Snow Leopard - due soon), Windows XP, Windows Vista, Windows 7, and several varieties of Linux.
Nero is only available for the Windows operating system and will not work with Mac OS X. A similar product for Mac OS X would be Toast. (See links below)
Mac OS X is the operating system for all of Apple's current Macintosh computers including iMacs, MacBook laptops, and the Pro models. The current version of Mac OS X is 10.6 (Snow Leopard) which can be updated to the latest revision10.6.2.
Disney's ToonTown requires the Windows operating system and will not work with Mac OS X on a Mac.