List of Threequels in Summer '07:
Pirates of the Caribbean 3 - Not quite as bad as 2, but nowhere near as good as 1.
Shrek 3 - Why are they still making these?
Spiderman 3 - Why so many villains? Why so many unresolved conflicts? Why so many flashbacks?
Rush Hour 3 - Wow. The world could have lived without this entire series.
Ocean's 13 - Should be called "Ocean's Eleven 2" and we can all just pretend Ocean's 12 never happened.
Bourne (#3) Ultimatum - Wow. I did not know people could be killed with produce.
& the 1 that doesn't even know it's a Threequel= Surf's Up
or Animated Penguin Movie #3
Some Might Call it a Stretch, but I Label Surf's Up as the 3rd in another Trilogy:
It's the Threequel to The Year Shia LeBeouf Dispels his Disney Channel persona a la JT and Xtina by Being in Real Movies Series. In case you missed it, the first 2 installments to this Trilogy were Disturbia and Transformers. Even Steven has been busy in 2007.
Some movies are good enough that there needs to be a sequel. Some even deserve a whole series. But in most cases, it is pretty understood that movies should stop after 1. Here is my brief list of movies that should have stopped at 1 but did not:Brief List of Movies with Really Bad Threequels:
Back to the Future 3
Batman (#3) Forever
(To Be Continued)