There are plenty of topics to taste in this year's San Francisco Black Film Festival, which opens Thursday with 80 films from across the continent to Africa, Europe, Latin America and ... Oakland. The festival opens with "The Front Line," an Irish thriller directed by David Gleeson. Nominated for four Irish Academy Awards, it stars Eriq Ebouaney as an African immigrant living in asylum on the streets of Dublin. Delfin Vigil reports.