This is me test driving my new Star Wars Voice Changer which switches from General Grievous to Boba Fett and then last but not least ...... Lord Vader....
See the full review at
With the Star Wars Spyware Voice Changer, kids can disguise their voices and sound like popular Star Wars characters, including Darth Vader, General Grievous, or Boba Fett. When the voice-changing switch is flipped to Darth Vader, kids will hear the signature breathing noises. When they speak through the Voice Changer, their voice will sound like Darth Vader's.