Just like hammers, drills, and screwdrivers are the tools of the modern tradesman, so to is the computer the trade tool of the modern software engineer. How it is constructed and how well it performs determines how well you can accomplish the tasks you set out to complete.
Gadgets
Build a top notch Home Theater PC (HTPC) for around $800
Just built a HTPC not too long ago. Here are the specs if you are interested.