Western Digital announced the new VelociRaptor 10k RPM 300GB drive today. Looks like it will be extremely fast. Can't wait to get 2 of these 
WD(R) Announces WD VelociRaptor(TM) - The World's Fastest SATA Hard Drive
Next-generation 10,000 RPM, 2.5-inch, 300 GB SATA Hard Drive, WD VelociRaptor is 35 Percent Faster and Twice the Capacity of the Previous Performance King
http://gizmodo.com/382013/western-digital-velociraptor-is-new-fastest-hard-drive-ever
http://www.westerndigital.com/en/products/products.asp?driveid=459
WD(R) Announces WD VelociRaptor(TM) - The World's Fastest SATA Hard Drive
Next-generation 10,000 RPM, 2.5-inch, 300 GB SATA Hard Drive, WD VelociRaptor is 35 Percent Faster and Twice the Capacity of the Previous Performance King
http://gizmodo.com/382013/western-digital-velociraptor-is-new-fastest-hard-drive-ever
http://www.westerndigital.com/en/products/products.asp?driveid=459