Barney is the favorite show of my youngest son. 

He usually watched it when he's still a toddler up to his grade 2. 

But kids does change their preference sometime while they are growing up. (now he's 11).

I asked him if he still remembered Barney. He would remember him as a "violet dinosaur" and that every time I sung Barney's theme song many times, this made it as his lullaby until he fell asleep.