Though this might be slightly off the main topic, but might be useful as some commentary on shooting video with cameras as opposed to camcorders.
It is my opinion that the Canon Powershot SX20IS does a great job shooting video. It is much better than all previous camcorders that I have owned. The video quality is amazing. There are two mics (stereo) on either side of the lens built in to the camera housing. For the built ins on a camera, they are among the best I've seen built in to any camera. Wind noise is a significant problem if you encounter wind. Obviously, when attempting to produce an amateur multicamera performance dvd, one is going to record audio with a dedicated top quality audio recorder and mic rig and then synch with the various camera's footage.
I've never shot anything where I used multicameras and such or significant post production, so I can't help there. I can only say that the Canon Powershot SX20IS does a good job with video, (its stereo audio track is decent with full sound with deep bass). The audio track is better than one would get in the old days on a Sony Wm-D6 cassette and Radio Shack Realistic Stereo Mic.
The Canon camera never draws attention because it is a camera. It has presented no problems with security anywhere. I'm certain that there may be newer state of the art camcorders that exceed its video capabilities, but on most other camcorders from just a few years ago, they just don't shoot video as well as that camera, in my opinion. I must qualify that statement and say that I'm one of those that wants simplicity and just turn it on and point/shoot, etc and don't get technical with manual focusing and things that someone who really knows what they are doing would normally do with quality camcorders.