It was a real nostalgia fest for me too. Watching David Bowie and co, I was 14 again, and I realised that the late 60s early 70s was really a golden age for pop music. It also reminded me that by the mid 70s, things were getting pretty dire, and we REALLY needed Punk! I was a bit irritated by the women insisting that EVERYONE loved the Bay City Rollers. I HATED them, but had to admit, to a disparaging DP, that somehow, I remembered all the words, much against my will! I was a David Cassidy fan, me!
My DD's 18 and loves all this stuff, but finds them hilarious. She says that things that were hideous at the time, acquire novelty value now, because they're 'retro'.
It was also interesting, discussing it with DP, to see how the sexes differed. He stopped watching TOTP in the mid 70s, finding it trivial and naff, and preferred the OGWT. I found all the prog rock stuff tedious and self-absorbed, and only came to appreciate it as I got older. Was 1970s/80s pop more of a girl thing?