Solid-state disks have been around for a long time, but at an insane cost - basically only the military and other Big Guys use them. I would really appreciate a smallish solid-state disk at a reasonable price; not only will you get better throughput, but search time should be reduced from miliseconds to micro/nanoseconds.
If the 32gig drive is at a resonable price, it would be perfect for OS + applications and things like source code and documents. Heck, even a few games for faster loading and less drive thrashing. But I bet you it's not reasonably priced
Another alternative are the ram-based drives that are starting to pop up. Sure, they lose your data contents if you unplug your PC for "some amount of time" (24+ hours iirc), but with a normal poweroff the data is kept thanks to the PCI bus power. And this a lot cheaper than solid-state disks, even if 4x1GB ram modules are expensive.
The only sad thing with the "ram drives" (which paradoxically is also what really makes them useful) is that they're limited to SATA or SATA-2 speeds, limiting you to hundreds of megabytes per second bandwidth, while the RAM modules are able to transfer gigabytes per second.