SC072 is a (no surprise) 72-processor Linux cluster that can fit under your desk and double up as a gentle foot warmer. Despite its many Gflops, 48Gb of RAM and 2Gbps of network I/O it burns less than 200W.
A beauty like this will set you back less than $15K and will impress the right date much more than your original Star Wars memorabilia.
Now, for the fun part–what apps would you want to run on this? Drop me a comment.