Most Disappointing Sequel?

Jurassic park 2.
Transformers 2.
Highlander 2.
Terminator 3.(couldn't resist)
Germlins 2 because it tried to be way too funny.
Batman and Robin(rofl rofl rofl A BAT CREDIT CARD!!!)

so many others to name i probably could go on all day.

Future reference here: Independence day 2(2013) I don't see how this can be good.