public override UITableViewCell GetCell (UITableView tableView, Foundation.NSIndexPath indexPath)
{
PeliculaCelda cell = tableView.DequeueReusableCell (celdaId) as PeliculaCelda;
if (cell == null) {
cell = new PeliculaCelda (celdaId);
}
cell.UpdateCell (ListaPeliculas [indexPath.Row]);
return cell;
}