Please excuse the craptastic pictures!
The head-unit is awesome, customizable up the wazoo, with navigation (Pioneer's iGo, though you can use any Garmin or TomTom if you want to mess with Windows CE a bit which the unit runs), a Bluetooth mic that's hidden by the rear-view mirror etc, voice recognition for calling people and playing artists/albums etc. And with the PAC module it interfaces with the steering wheel controls. And yes, that's a custom boot-up screen in the last picture. I really like that it has an iPod hookup and it shows the cover art etc for every album. W00t!
Also, there's a back-up camera addition you can get for the device if you want to spend a bit more to get the accessory.
Head Unit: Pioneer AVIC-F700BT $351.75 delivered after Live cashback
Front speakers/components: Infinity 6020CS 6.5" $79.46 after Live cashback
Rear speakers: Infinity 6022i 6.5" $44.00 after live cashback
Destroying the old stereo and speakers? Priceless. (in my mind at least! )