I constantly have dreams about zombie apocalypses, more like this webcomic, http://www.thezombiehunters.com/index.php?strip_id=1
where there are different classes of zombies, and I wake up and swear I hear shambling. On a lighter note, in class I had some dream my friend was pointing stuff out to me in a magazine, and when I woke up I didn't realize I was dreaming, so the first thing I said was 'Where's Julia?" and everyone thought I was losing it. It was pretty awkward.