I wish everyone luck! If you get the submission in, regardless of what percent complete it's a great deal more than most people. Even if you don't get it in, hopefully you learned something new along the way.
And to the question: I just submitted mine! I'm a 1 man team with a job and did all the art, music, sound effects, programming, animation, and effects from scratch and quite happy with how it turned out. Several snags and a lot of new programming/music things learned, so I already win in that regard. My goal this year was to enter my first jam and I did.