But getting to have a clock I don't think it's such so great OS, or am I losing something?
It all depends on what you expect from an OS. NetBSD is a full-featured Unix-like OS, although of course Amiga hardware is providing some limitations as to what you can do with it. But no, clock is not the only app we have...
I guess gibs'es vid just wasn't showing off much of the possibilities. I should record something better one day
For now just check out official NetBSD site to see what can you do with it (also wikipedia article might be a good introduction).