My Rebuttal to Mochiguman.

First of all thank you for your correction.  Shows another different style of writing.  Lesson to all, especially to myself. Proof read first.  However, I was proof reading this piece when I saw your correction.  So I cannot resist...

Red: grammatical errors

Blue: sounds awkward/unnatural/unidiomatic/etc.; suggestions for improvements while preserving approximate meaning

How many of us had have seen the movie, "Mama Mia," starring Merryl Streep?

You are correct and I was wrong.

It uses many Abba songs to be sung by the actors. The soundtrack features many ABBA songs ("sung by the actors" is basically implied; however if you wish to keep this phrase, I'd advise against using this awkward, pseudo-passive voice "songs to be sung by the actors," and instead go with "actors sing ABBA songs").

The sentence should be "It uses many Abba songs that were sung by actors".  Remnants of previous correction.  Your correction is better.  However, you cannot imply that the actors were singing the songs.  You saw the movie and so you are assuming this as the basis.  The original singers could be singing in the background.

If you love the movie, then it may come as a surprise that this movie is based on other an earlier movie!

Too fast in thinking but slow in fingering on the keyboard.  The original sentence should be "... base on another earlier movie".  There were two.  One was a failure.

A 1968 comedy, "Buona Sera," starring the hourglass figure, (what does this even mean?) Italian actress Gina Lollorbrigda; "Buona Sera, Mrs. Campbell".
I am surprised that as an American, you don't know the term, hourglass figure!  See

http://en.wikipedia.org/wiki/Female_body_shape

Instead of a story about an American woman living in Greece, it is about a reunion of War War II veterans back to in Italy.

She became the widow of a fictional Capt. Campbell, the name of the soup company she took to protect the reputation of both the mother and daughter.

^ this entire sentence does not make sense. First, it does not follow logically from the previous sentence: who is "she"? Secondly, how does assuming such an identity protect the heretofore unmentioned "mother and daughter"?? Am I to assume "she" is the unmarried mother who has a daugther?? Anyway, here is a grammatically correct version of this sentence: "She pretended to be the widow of a fictional Captain Campbell, which is actually the name of a soup company. She took on this identity to protect the reputation of a mother and daughter."

I stand by my original sentences.  Yours is a another way of writing.  Yours is clearer.

My, my, how the times have sure changed! 

The "the" is optional.  I concede the sentence is wrong.  The original was "My, my, times sure have changed".

For those who have access to Youtube, you can see watch the comedy movie trailer and hear listen to the complete theme song; a very chirpy piece.

This one you are absolutely correct.  Subtle nuances.

Gina was not only an actress, a professional photographer, a sculpturess but a diva too. Here's an aria which she sang in her own voice. (Personally, I feel like the whole "in her own voice" thing is implied)  Your implication is wrong.  Voices can be dubbed!  Many actresses did not sing but dubbed by Marnie Nixon.  A famous example, Natalie Wood did not sing in "Westside Story".  Marnie Did.  So was the "voice" of Audrey Hepburn in "My Fair Lady".  Same dubbing person.  Obviously you must be a product of recent times.

Trailer:

For those who want to see more images of this screen goddess (goddess of the silver screen? I'll be honest; as an American, I've never heard "screen goddess" before [not saying it's not correct, and people will know what you mean] but this expression is much more common):
Honest injun!  You don't know the term, "screen goddess".  Are you sure you are American?  Really.

http://screengoddess.tumblr.com/

http://oxforddictionaries.com/definition/english/goddess

http://igoddess.com/fiona-horne-rock-star-and-screen-goddess-in-a-patriarchal-world/

Good job! Your written English is quite good.  Thanks.  You should be my proof reader.