What makes it different from others?

Although it has its amusing moments, in eneral the plot does not convince.

It's funny, it's tense, it features two great performances from two actors and the director expertly creates a web of odd tension where you actually don't know what is happening for the majority of the run time.

A terrific literary drama and character piece that shows how the process of creating art can be seen differently by those doing it and those looking at it from the outside.