NAME: Cobra iRadar
WHAT DOES IT DO: In addition to your typical radar detector functionality — stuff like the ability to detect all radar and laser guns in use — you get the benefit of their easy-to-use iOS app. Data from other users in the iRadar community compiles into their cloud servers, letting you instantly access information about speed traps on your device. It also plots traffic, red light cameras, and features a convenient car finder on their map-based interface.
HOW MUCH: $200
FUN FACT: I don't need this because I never drive too fast :-)