Samsung loves to label something "World's blank," which is why we assume they spent the R&D dollars to create the (ahem) world's first 18x DVD burner. And being that we here at Engadget burn DVDs once every, dunno, couple of months, we can see this shaving literally minutes off our burns over of the next couple of years. It also does do DVD±RW, DVD-RAM, and features Tilt Actuator Compensation (TAC -- whatever that is), Double Optimum Power Control (DOPC -- whatever that is), and a $70 US price tag.
Update: Zing! Samsung -- and we -- apparently stand corrected. See: Plextor's PX 760A.