Oh, I just realized I never answered your question! The commercial breaks are just little flashes of something irrelevant in the middle of my long epic dreams, and they are not incorporated in the epic in any way. Like, "We interrupt this drive across the Pacific Ocean to bring you the image of giant weasels in a movie theater! Now back to the ocean drive." This would be different from if we drove PAST a weasel-filled movie theater IN the epic dream.

If I play too much Zelda I get video game formatted dreams. And I am willing to bet that a lot of Americans dream in some cinematic form, because of the prevalence of movies. (I wonder what Alfred Hitchcock's dreams were like. He was, like, the king of bizarre camera angles ...)