I'm currently enjoying watching the highlights of the 2018 TdF on ITV4 every evening.
Watching the TdF highlights show (on Channel 4) in 1989 is what got me back into cycling. Partly the excitement of the race, and partly the idea of cycling in places like that. (Sadly, I never did make it to the Alps or Pyrenees and I doubt that I will now.)
Funnily enough, I found my 1989 diary a couple of weeks ago and I can see how keen I was in the autumn that year. I was only doing short rides but after 20 years off the bike and never having ridden big hills before, Yorkshire's long/steep climbs felt mega-tough!