June 20, 2011 2:41:23 PM PDT
Animation might help you more. I think it'd be good for a storyboarder to know the ins and outs of how animation work, and story boarding classes are included in animation degrees as opposed to Illustration. You might be interested in "Your Career in Animation" by David B Levy, who talks a bit about storyboard artists and how they fit in the biz.
Ultimately though, it's up to you. :) If your skills are strong enough at story boarding, it probably won't matter what your degree is in.