Get a 40GB drive that is fast, set up a 30 gig system partition and a 10 gig swap partition and install windows 7 (or whatever you want) on it, then install the rest of the stuff on a regular drive. It will enhance your box a bit.
Sure, i'd love to have a SSD based TB storage for Games and VM's, but for personal use they are just too bloody expensive right now.
EDIT: Oh, and there is a reason why i said Windows 7 and not XP. XP isnt fully compatible with SSD drives, Windows 7 (and Vista to some limited extent) has support for them.
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"It is far better to grasp the Universe as it really is than to persist in delusion, however satisfying and reassuring" (Carl Sagan)