I am using Kino from time to time (on FreeBSD and Ubuntu) and am quite happy with it. The major drawback IMHO is that it doesn't have any timeline system which makes overdubbing the audio a real adventure. The website claimed that some TV stations use it for preproduction so it can't be that bad.
@Varthall: Open movie editor looks awesome, gotta try that one on my BSD box. I'm really looking forward to your port. Oh, and forgive me for asking, but maybe you can try to compile it for AROS aswell? ;-)