http://upload.wikimedia.org/wikipedia/en/a/a2/Crocodile_Dundee_in_Los_Angeles_film.jpg

 

http://upload.wikimedia.org/wikipedia/en/8/86/Blade_Trinity_poster.JPG

 

and to a lesser extent

 

http://upload.wikimedia.org/wikipedia/en/c/cd/X3_poster_version3.jpg

 

so has any threequel managed to be either as good as the other films in the franchize or not completely $h!te (for the latter xmen excepted, though not as great as 1 + 2)

Lord Of The Rings? The Original Star Wars trilogy?

i can't think of any others.....