Subject pretty much says it all. In this case, I'm specifically referring to a mic to use for stealth recording.
The onboard mics on video cameras are generally pretty crappy. Of course, as is the case with audio taping - location is really important. The major difference being: you can't generally film from somewhere right out in front of the stacks and get away with it nearly as easy as you can tape audio. So you usually end up in a spot (the cheap seats come to mind) that is not good for audio. If it's a really popular band playing a large venue, you stand a reasonably good chance that someone audio taped the show. But most of the time that doesn't happen, so you are stuck with whatever you got with your video camera's mic.
So does anyone have experience with attaching an external mic to a video camera audio line-in jack? Thanks!