I'm going FIVE SCREENS
Just got a new linux box put together last night. Took me from about 7:30pm to 11pm to physically assemble the thing and install Ubuntu 10.10 and the nvidia driver to drive its four screens (still have 2 year old iMac too).
`make -j8` is my new friend thanks to the four-core eight-thread i7-950 cpu. Also, it's 750W power supply will warm my toes all winter.