Need good RAID HD setup

The new motherboard I installed supports SATA100/133 RAID configurations, but I'm having trouble trying to think of something I'd want to get for a RAID configuration in the future. At the moment I plan on getting two HDs anyways, and since this is SATA and not a SCSI RAID setup, can anyone recommend a good setup? I'd probably have it in there for redundancy (Sephiroth isn't the only one unlucky with hardware it seems) if I ever plan on setting up a webserver or a powerful development machine (which is what it is being geared towards in the first place). I'm sure a few of you are familiar with this stuff. Any ideas?

If you want redundancy, set up both drives in a RAID 1 array.