Top 10 Sequels. Star Wars: Episode V - The Empire Strikes Back (1980)
Batman Returns (1992)
Die Hard 2 (1990)
Indiana Jones and the Temple of Doom (1984)
From Russia with Love (1963)
The Road Warrior (1981)
Dracula: Prince of Darkness (1966)
Another Thin Man (1939)
Star Trek: First Contact (1996)
The Devil's Rejects (2005)
Like Keirarts i've stuck to direct sequels. I may well do another list of the rest.