Hearing the Partridge Family is not my 1970.
It's becoming less than necessary every time it shows up, now. The first time, and then the VD set, were nice experiences, but it's not something I need to here every time we hit 1970, or even every fifth time we hit 1970.
On the other hand, it's a major sledgehammer for me. I distinctly remember coming being at school one day (I was in 6th grade) and as glee club was getting started, I had it "I Think I Love You" stuck in my head and got half the room going in an impromptu rendition.