Thanks you Frink and Bingo for the welcome.
I found this article published a few month ago :
9 actors who saved otherwise mediocre movies :
http://guyism.com/lifestyle/actors-who-saved-bad-movies.htm
2 Harrison Ford - Star Wars
I am going to catch hell for this one, but search your feelings, you know it to be true. Without Ford’s iconic performance as Han Solo, Star Wars is just the hokey story of a whining farm boy who catches the eye of a weird old wizard and then flies around space accompanied by a pair of gay robots and an overgrown dog man. Or, to put it another way, if you take Harrison Ford as Han Solo out of Star Wars and its sequels, you know what you get? The Phantom Menace. That’s right. Ford managed to drag the original Star Wars films over the line that separates cheesy from awesome with his ultra-charismatic and cool performance as Han Solo. It wasn’t George Lucas who did it. Hell no. Let’s not forget that Lucas scripted Han to boringly respond “I love you too” after Leia told him she loved him just before he was frozen in carbonite and it was Ford who ad-libbed the line “I know.” That is the scene which sums up Han’s whole character and it was because of Harrison Ford, not George Lucas. He made Star Wars what it is today. You can have all the special effects you want and you can spend a billion dollars creating a whole universe that looks amazing, but if you don’t have the right attitude and you don’t have something that makes it all feel genuine and real, then you don’t have anything. Thankfully for George Lucas, he had Harrison Ford and he should get on his hands and knees and thank the maker every day that he did, because in the end, Harrison Ford is what made Star Wars go.
I don't agree at all with his opinion, of course without Ford the movies wouldn't have been the same he brought a new dimension to the character and made him likable but the first 2 films would still be good. It's not like the other actors weren't good or the plot was boring.
In his article he also mentions Johnny Deep for the POTC. I agree with him, Deep reminds me of an old French actor that you might have seen in the Fantomas movies, Louis de Funes.
They both played in many terrible movies among pretty bad actors but their acting performance are close to genius and save the whole thing.