The Brown Linux User Group hosts a Linux Installfest once a semester. This Saturday, March 1st, you can join them in the CIT Motorola Room - Room 165 at 115 Waterman St - from 10AM to 3PM. They will provide install CDs, power cables, monitors, keyboards, mice, and, most importantly, pizza.
They note "If you don't have Linux installed but have always been tempted to install it, now is the time! Stop by, and we'll get you up and running. If you have Linux installed but there's some bugs or configuration errors, stop by and we'll fix your system."
For more information, see their event website at http://blug.brown.edu/installfest.