Apple, think different

Full screen 4:3 800×600 1024×768 1152×864 1280×960 1280×1024 1400×1050 1600×1200 1920×1440

Wide screen 16:10 1280×800 1440×900 1680×1050 1920×1200 2560×1600

Dual monitors
2560x1024

(archive)