We discuss what we've learned about William H. Macy's Frank Gallagher, Emmy Rossum's Fiona, Lip, Ian and the rest of the Gallagher clan over the seasons (up to season 8). "Shameless" is a show about addiction, about poverty, about family. It’s a show about whether change is possible. Every character wrestles with bad habits and self-destructive habits as they cope with their environment. "Shameless" show how difficult and rare it is for people to truly change.