You can make the Starfox team talk! Just read this and I'll show you.
Step 1:In Brawl mode, choose Fox and get a second controller to play as well. You can get a CPU to but it will attack you while you are doing this.
Note:You must do this with nunchuck
Step 2:Choose the Corneria stage
Step 3:While the nunchuck is connected to the Wii remote. Press 1 and 2 at the same time.
Note:If the taunts are one of Fox's normal taunts, then you are doing it wrong.
Step 4:You're done! Something should happen afterwards.
I've never tried it in training mode so you should this one first.