PowerBook G4 Series (2001-2005)
The PowerBook G4 series, with its sleek, thin, and uniform titanium enclosure, introduced a radical simplification of the PowerBook form factor in 2001. That cutting-edge design continued through the years as Apple introduced variations in PowerBook G4 screen size, from a petite model with a 12-inch display to the world’s first laptop with a 17-inch screen (introduced in 2003), the largest display on any notebook then available. (Photos: Apple, Inc.)