I didn't read the whole thread so someone might have already mentioned this one, by my chapter has been using "Road Outside Columbus" by O.A.R. It's about going off to college and finding a home away from home. Our video typically starts with O.A.R., then has some sort of angel song, and then closes with "Feels Like Home."
My chapter was planning to use Esthero's Wikked Lil' Grrrls for the sisterhood/social video, which would've worked really well if we didn't have technical problems!