IPhone Talkbox: Like Peter Frampton Got Stuck in Your Phone

This application for the iPhone lets you create cool vocal/guitar sound mash-ups that sound like something off of Frampton Comes Alive or Bon Jovi’s Slippery When Wet.
LoL Software’s TALKBOX app for the iPhone lets you manipulate sounds with your mouth, creating that classic 1970s guitar wah-wah sound.