Just home from seeing it today.
Best I can say is "Mostly Harmless". Bland.
If you've seen the trailer you've seen all the highlights, especially all the visual effects - there ain't much else to see.
I'll have completely forgotten I've seen it tomorrow, because it has nothing memorable about it. Hope I don't forget it, though, wouldn't want to waste my money on it when it's released on VHS tape - sorry, I mean 8mm film, which is where it belongs.