Sephardic, Ashkenazic, Mizrachic, or just out for a good time -- whatever their background, Jews poured into the Skirball Cultural Center last Sunday for the first annual Sephardic Arts Festival. The event was a success beyond its organizers' wildest dreams. Attendance, estimated at more than 4,000, was more than double the anticipated turnout, making it the largest audience for any one-day event since the Skirball opened in April 1996. Despite long lines for shuttle buses and food, the mood of participants -- a mix of generations and ethnicities -- was festive and good-humored. Many people bumped into relatives and friends -- often literally -- while searching for seats, program notes or restrooms.