[The Flayed One]

I'll break down my opinions of yours, then offer some of my own.

In my opinion, Spiderman 2 was better than 1.

I slightly disagree, but just barely.

Same goes for X-Men 2.

I can jump on that bandwagon. X-2, IMHO, was definately superior to the first.

Everyone knows about Aliens.

This is one I never understood. Alien is a horror movie. Aliens is an action movie. Alien is the superior of the two.

Empire Strikes Back is regarded as the best one in the Star Wars franchise.

I agree. I've also seemed to notice that this differs with age. People too young to see the original in the theater tend to think Empire is superior. Most people I know who were old enough to enjoy A New Hope when it came out think it's the superior of the two.

Superman II was way better than 1.

Eh...they're about the same to me.

Toy Story 2 was another which vastly improved over part 1.

Another one I whole-heartedly agree on. I actually didn't enjoy the first one when it came out. After watching 2, I went back and re-watched the first one and enjoyed it.

Blade 2 was actually more neat than 1.

This is obviously because del Toro is a god amongst men.

I would regard Chronicles of Riddick on par with Pitch Black though.

I enjoyed Pitch Black more. It was one of, if not the coolest alien movie to come out since Alien. I really dug CoR, though.

Evil Dead 2 is regarded as a better movie than ED1.

I don't think very many people will argue with this. I, however, think ED 2 just barely eeks it out, where as most people I know think there is no comparison.

Jason was actually liked a lot more in pts 6, 9 and Jason X than pt.1 or 2.

A lot of people who didn't watch the first Friday 1st hate the movie. I like it, but it definately doesn't seem to fit into the franchise it became. I can't really state which I like more.

Terminator 2 is a vast improvement over the original Terminator of the 80s...

Effects & action-wise, there's not even a shadow of a doubt.

Here are some that I suggest to be added to the list:

I think Shrek 2 is better than Shrek, for the same reasons stated in the Toy Story response.

I think Exorcist III is superior to Exorcist. Again, though, they're almost completely different movies. As far as I'm concerned, they never made an Exorcist II.

There is a school of thought that Dawn of the Dead is superior to NotLD. I happen to belong to this school.

I consider Chamber of Secrets to be the best of the Harry Potter series so far.

Batman Returns is better than Batman. Batman Begins is the best Batman movie so far, but it's not really a sequal.