I don't usually remember my dreams, but I know they're probably epic because I get all my best ideas for what I should write in my novel after I sleep.
I do remember I had a dream with a commercial in it. I don't remember the dream too much, but it was dystopia, I think, and I was fighting these kind of government drones and then this childish voice said "We'll get back in a minute" and then there was a cookie commercial (not a real one), with a little girl making choclate chip cookies and smiling. She was wearing a yellow apron and there was a pink background Then she said "MMMMMM" and someone said "GO CHOCLATE CHIP COOKIES!" and then "Back to the program..." and I was back in my dream. But everything had a pink tint from there on foward.
I also had a dream that I could turn into a bird and I went to Hogwarts; that was epic. I don't have many nightmares, or if I do, I forget them.
My mom has really bizarre dreams though, and my dad says he always realizes that he's having a dream halfway through his dream and then he can do whatever he wants. Like jumping of buildings and flying. I'm envious. He gets to go flying all night long! Oh, and the reason most of us can't remember our dreams is because humans forget their dreams unless they occur no more than ten mintues before the wake up, supposedly.