I've watched every single one, live as they happened, from Bart Starr vs. Len Dawson to Patrick Mahomes vs. Tom Brady. A few things I can remember about the first Super Bowl:
It was played in the LA Coliseum, and was far from a sell-out. Both NBC, which had the TV rights to the AFL games, and CBS, which owned the NFL rights, televised the game. Curt Gowdy was the lead announcer for NBC, not sure of the lead announcer for CBS, perhaps Pat Summerall. It was played early in January.
It wasn't called the Super Bowl initially, it was the AFL-NFL World Championship. Chiefs owner and AFL founder Lamar Hunt came up with the name, inspired by a toy he had gotten his son for Christmas called a "super ball", a toy I had myself, that was a very dense rubberized ball, slightly bigger than a golf ball as I recall, that was advertised as being able to be bounced over a 4 story(?) building.
It wasn't until the late 70's-80's that Super Bowl parties became the norm. I will have to admit to nodding off during one of them as I was watching it by myself and woke up when Curt Gowdy was going nuts about the Raiders "old man" Willie Brown returning an interception for a TD vs. the Vikings. It wasn't until the Giants-Bills Super Bowl, the one that Scott Norwood missed a 40 something yarder, that I saw the game at a Super Bowl party.
So what are some memories you have of your Super Bowl experience?