Animatics simply displays the Title (or the file name) on thumbnails. I might add some method to change this. Today it's only possible by modifying the panels.inc in the skin's folder (line 99):
(' title="' + (stripHTML(vars.get('title')) || vars.get('label')) + '"') +
change to this:
(' title="' + (stripHTML((vars.get('title') + ' ' + vars.get('comment')).trim()) || vars.get('label')) + '"') +