Eurocom is known for cramming the latest technology into small-ish form factors; it was the first to offer a Core-i7 notebook, for example. The D900F Phantom i7 was a mobile workstation and featured a 17-inch display, Intel's Core i7 processer and X58 chipset as well as Nvdia's G280 GPU. The entire thing weighed a backbreaking 11.9 lbs. Not exactly something you could throw into your briefcase and take home in the evenings but it was mobile nonetheless.
Today Eurocom is offering another "it's-only-as-portable-as-you-are-strong" notebook. This one boasts Intel's six core i7-980X Extreme Edition or Xeon W5680 and is called the Eurocom D900F Panther. The mobile workstation features Nvidia Quadro FX OpenGL graphics, up to 24 GB of DDR3 and up to 2.6 TB of storage (across four HDDs). You've also got the usual bells and whistles like Ethernet, HDMI, eSATA, DVi Dual Link ports as well as a 17" WUXGA LCD display and full size keyboard.
Again, this is one hefty machine. Measuring 15.8" x 11.9" x 2.05" the Panther weighs in at "under 12lbs." As for price (you probably don't want to know), the base model rings up at just over $3,000. Yikes. More on Eurocom.