Just make sure when you reapply, you talk to someone from the Adcom after you are rejected to see what you can do to improve your chances. Sometimes, they'll tell you exactly what they want from you. Get that persons name and contact info, keep in touch throughout the year and keep asking if you're on the right track. Then when you reapply, that same guy might see your improvements and call you in for an interview.
Bottom line, when you reapply, always show them you improved from the year before. And emphasize it somehow in your personal statement.