Once again, 'American Dad' flew solo this week, representing the vast Seth MacFarlane Sunday night empire on FOX. 'Sons of Tucson' will be back to finish its run throughout the summer. The geniuses at FOX then decided that next week, 'Family Guy' and 'The Cleveland Show' will be all new, while 'Dad's' a rerun. This is the kind of brilliant planning that had 'Sons' premiering after a night of almost all repeats.