The large 15.4" screen, the powerful Intel Core 2 Duo CPU, and the dedicated nVidia graphics make this Ubuntu laptop a very powerful system.
Specs:

• Bright glossy 15.4" LCD display @ a high-res 1680x1050 pixels
• nVidia 9600M GT dedicated graphics with 512 MB video RAM
• Intel Core 2 Duo with a 1066 MHz Front Side Bus
  
• Speakers on both sides of the keyboard for quality sound output
• 802.11g WiFi included
  
• Bluetooth optional
  
• Combo CD-RW and dual-layer DVD-RW drive
• Headphone and mic jacks in front for easy access
• 3 USB ports
• Gigabit Ethernet port for whenever you aren't near a WiFi access point
• 15 pin VGA monitor port
• HDMI video port
• SD/MMC slot -- download photos, anything from your phone (if it holds an SD card), your printer... extreme usability
• ExpressCard 34/54 slot for extra expansion
• Webcam can ship either enabled or disabled with the Val Hensen mod
  
• Your choice of Ubuntu, Kubuntu, or Edubuntu
• Dimensions: 367 x 270 x 31~39 mm (W x D x H)
• 6.5 pounds