New iMac. Partitioning 1Tb w/o reinstalling using Boot Camp?

I'm about to setup my new 27" iMac but would like to partition the drive. I assume I could just put in the install DVD and reboot, use Disk Utility to partition and then go through the restore steps. Personally, I'd to avoid this so I can get to playing asap. Can I just use Boot Camp to partition the drive then "cheat" and use Disk Utility to reformat so it's not a "Boot Camp" partition, per se?
Thanks in advance (and helpful answers within the next 20m WILL get stars )

On the contrary, it makes it somewhat more likely.
Not exactly true. The system partition has multiple writes to it by multiple programs for multiple different reasons. If you are, for example, capturing video, any number of programs may write to the disk at the same time. Though OS X is fairly intelligent with respect to disk use, I have witnessed on multiple occasions where a small file was written right in the middle of multi-gig file (video capture, for example). It's just the reality of the situation. It doesn't mean the OS did anything wrong, it just didn't know how large the final file would be. A second partition has a far lower chance of a random file being written to it while a data dump is being performed.
Plus, it guarantees longer seek times, as accessing one partition, then the other, always requires a certain amount of movement.
True, but a file of sufficient size written contiguously can quickly offset the minute seek times of modern drive heads.
Huh? Rebooting doesn't defrag.
No, but a proper defrag often requires rebooting from a non-system partition to free up all system resources (metadata, etc). iDefrag is a perfect example.
That's rarely true on OSX. Usually the only reason is for multiple boot partitions.
I don't see how you can say this with a straight face. If I see multiple reasons, there are, by definition, multiple reasons. I said nothing about rarity, only that there is more than one reason for multiple partitions.
For future reference, Disk Utility would have worked fine for this purpose.
Thanks for pointing that out. I had completely forgotten that was possible. Wish I knew why.
<Edited by Host>

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