This Kamameter from Japan turns your PC's ordinary 5-inch front panel into a red/green/blue/purple/yellow set of meters and dials straight from the set of Tokyo Drift. With the knobs, you can control fan speed, and volume, and from the meters you can monitor just how hot your PC is getting.
There's also a warning system that plays an alarm any time your PC crosses a temperature threshold. You can change the backlight colors with a knob to cycle among seven equally bright colors. All you need is some underbody lights and some nitrous and you're set.