how does this work with video camera's? Does it connect or something?
no, the whole point is NO direct connection, i.e. "remote" audio.
nothing new in the technique, movies have been made this way since the 1920s when "talkies" first came in. ... you use a clapper board or snap your fingers (as I did) to give a sync point. Then when editing the video, just slide the audio track so that it matches up with video. Simple, fast, powerful.
the Droid does very professional quality sound recording. Wonderful adjunct for those of us who do professional video work.
--Ralph