While not optical storage related, its worth mentioning that Toshiba has introduced a 200GB USB 2.0 portable external hard drive. Based on the company's 2.5" hard disk platform, the drive is small enough to fit in a pocket and can be powered off a computer's USB bus.
Toshiba Storage Device Division (SDD), the industry pioneer in mobile storage products, today introduced a 200GB 2.5-inch USB 2.0 portable external hard drive capable of storing up to 57,000 digital photos, 52,000 MP3 music files, 88 DVD videos or 23 high-definition videos. The 200GB portable external hard drive delivers the highest capacity of any backup solution in the compact 2.5-inch hard drive class.
Toshiba's USB 2.0 portable external hard drives are available in capacities ranging from 100GB to 200GB. Their new 200GB model will set you back a cool $229.99. More information is available on Toshiba's website.