Spend My Money!

Ok, first, No one other than me will be receiving the money/the benefits of my money than me (Maybe Charity too, but I worked for this money, so I'd say that the majority will go to me). I already have a Higher-End PC (Exact Stats Below) and I am looking to: 1. Upgrade it, 2. Buy a Macbook (or iMac), 3. Get a new PC and either Run MythTv on it or another flavour of Linux, or 4. Whatever you think I need/want. I'd perfer you keep it related to the online world, however make any suggestions that you think pertain to me.

Also note, I am not spending this money on any online services, so don't say "buy a XXX design from XXX."

If I am going to get a PC, I am looking to build my first PC, so if you could shop by part it would make me happy.

At the Moment I have $409.00 United States Dollars, don't hesitate to spend it all!