A disturbed individual embarks on a worldwide tour to make sure a project he launched years before is on track.
An Italian kid watches a lot of movies.
Amarcord?
Not the one I’m thinking of.
Sounds like Cinema Paradiso to me
That’s the one!
Veteran journalist has a great time with a beautiful woman he happens to meet and decides not to write about it.
Roman Holiday
Superman 
A new technology forces changes in the movie industry.
I agree. It should be like this:
A spoiled heir hallucinated his father was murdered by his uncle, then spends far too long attempting to prove this with elaborate games. His games cost several innocent people their lives and accomplishes nothing. And the run time is four hours. Zzzzzz
And not this:
A gravedigger meets a prince.
Yes, Gregory Peck and Audrey Hepburn!
Uhm, no. 
Singin’ in the Rain.
Easy one. Hamlet, with Laurence Olivier and Jean Simmons.
The Artist? Hugo? Nickelodeon?
Disturbed individual travels from Colorado to California with regrettable results.
Correct.
Two people talking as they eat a meal.
My Dinner with Andrei.
Wasn’t it three men and a pig?
I’ll let myself out