Answering the challenge to old-timers here to bump up some old (but good) threads for (re)discussion.
My exercise video career started in the early 1990's with Jane Fonda's Low Impact Aerobics and her Workout with Weights--I was in my early fifties at the time. Then I added in the Weight Watchers Low Impact Aerobics. These are all good for beginners as well for intermediate exercisers--Unfortunately, they now are available on videotape only--never made it to DVD.
Now in my seventies, I participate in 2 Strength Training Classes and one Zumba Gold class a week, plus Leslie Sansone's DVD of 5 one mile walks called 5-day slim down. I do one 14-min walk and and the one 12-min walk for 2 miles in 26 minutes, aiming for 2 times a week. I still occasionally do the other above-mentioned videos for variety.
Twenty years of this stuff has been really good for my health!! I always hated sports, but late in life discovered that I love exercise.
BTW, once I learn a video routine, I mute the sound and listen to the radio or an audio book while following the movements--helps with the boredom and annoyance factors.