Want to share an inconsistency from the movies that drives you nuts?

For instance I cannot stand the movie Ghost because of the inconsistencies. Dude had to muster all of his strength to touch a penny, but he was able to sit on chair! Seriously, if his finger goes right through a penny shouldn’t his ass go right through the chair? How can he stand up the floor of an upstairs apartment or land on the floor of a subway car? He can’t! Is there a similar inconsistency in the movies that makes you nuts?