under your control as options depending on where you are buying the computer from because 'regular' vendors such as HP, Dell, Gateway, etc. have their own way of doing things, including getting you recovery disks. Some do, some don't, some give you the option to create your own from their separate partition of the harddrive.
If you are talking about a custom build where you can pick and choose everything and how it's set up and can work with a vendor who gives you separate installation disks for everything, including the operating system, hardware, motherboard, software, and manuals, that's the route to go because the ease of having control later of only installing what you want and knowing your installation 'recovery' disk isn't hardwired to the original hardware or it ceases to function, is the biggest benefit of all.
What specifically do you want to do and who will you be going to for it?
Not to hijack gumaro014's thread, if buying a new computer, what do you recommend as the best / minimum disk position, questions on hidden partitioning (!) etc, to come with it please?
Whilst a stretch for the ME Forum, I hope you'll find it relevant as I'm probably not alone in knowing that ME is out of date, ho hum.