Hilarious! I recommend that all Lego fans see it. Why? I'll not spolierize (aside from the comments in light gray font below)... yet!
SW characters appear; and some of them are the actual movie actors' voices!
Batman's brooding is pretty funny.
the 1980s-era space man character is great (you see the actual space sets, plus the crack in his helmet strap and the faded ship logo on his chest).
Live action actors towards the end.
A great, funny film. For both adults and kids.