Motion Graphics and credits

I have a few questions about the proper way to do credits with our Golden Doorknob. Should we roll credits twice the way movies normally do it? Once in the beginning with the important names and then again at the end to included everyone. I know we have a time restriction of 5 minutes and maybe running them twice would take away from our storyline, but I just want to do it the right way. Also, tomorrow I will be coming to class with questions on how to do a motion graphic with our title. I'm not the best artist in the world but I'm pretty sure I can describe to you what we want out title to look like to your motion graphic students. Hopefully tomorrow will be a productive day with the editing portion of our project.