Having A Wild WeekendThey came, they played, they conquered. There was no stopping them. The British invasion of the U. S. pop scene was in full force in 1965. And one of the most super of the supergroups was The Dave Clark Five. The quintet takes to the screen with the same spirit they bring to their music the "Tottenham Sound" to '60 buffs in this breezy romp that's also the feature directorial debut of John Boorman (Deliverance). A year earlier, four well known lads