I liked the Dave Clark Five when they were churning out hits in the 1960s, but I knew nothing about them, or even which side of the British Invasion they were on, other than that the lead singer of the band also was the drummer, a rarity then and since (Phil Collins aside). In this two-hour Great Performance special, you can learn all about them, and revisit their music. Which, I predict, will make you feel “Glad All Over.” Or, maybe, in “Bits and Pieces.” Check local listings