The ALM Film Maker Pro Pack for iPod touch 4g lets you make movies like a pro with your iPod touch 4g. The kit comes bundled with the mCAM for iPod touch 4g, a Rode VideoMic Pro, and a microphone adapter with audio output.
Film Maker Pro Pack for iPod touch 4g
ALM mCAM for iPod touch
Rode VideoMic Pro Compact Shotgun Microphone
Microphone Adapter with Audio Output