I have not picked out a college yet, but when i do, i want to put one of my videos in my portfolio. 99% of my movies are violent, discusting horror movies.(the special effects aren't bad either) I like making horror movies, but do colleges really like to see them? I love to make horror movies, and that is what i would like to do when im older, and maybe some other stuff, but would colleges accept me if i include them?

i would include the best of everything you have done.
it will show your flexibility as a filmmaker.. it will more than likely help you than hurt you.

just try and include a good mix of everything..
and make it original.

good luck man!