DVD Studio Pro 1.1 is a DVD-movie authoring package, and is the paid-for version of iDVD Studio - which ships as standard with all SuperDrive-equipped Macs. LaCie's combination drive offers this facility for all FireWire-equipped Macs. It costs $989 in the US, with UK pricing yet to be announced.
When Apple introduced SuperDrive at Macworld Expo San Francisco in January, it revealed it had no plans to introduce its own external version, preferring to leave this to third-party peripherals manufacturers such as LaCie.
Like the SuperDrive, LaCie's external offering will record to DVD-Rs at 2x, and read at 6x. It writes at 8x for CD-Rs or 4x for CD-RWs. It reads CDs at 24x.