I've completed Ocarina of Time 19 times. I shit you not. I find it enjoyable every time, and just writing about it makes me want to play it. Unfortunately, I don't have anything to play it on. I got it when I was 6 for the Nintendo 64, and completed it about 4 or 5 times, because at that age, you can do things over and over again and stay interested.
Then over the next few years, I'd play it every now and again, mounting up to 11 or 12 plays. Then when I got a gamecube for my 13th birthday with Wind Waker, I got Ocarina of Time with it, original and master quest version. So, I completed them a few times and then got rid of the gamecube.
Then getting a Wii, I decided to get a gamecube controller and bought Wind Waker again, completing OoT a few more times. So, around November last year, I completed it for the 19th time and then the Wii had to go. I'd like to complete it for the 20th time but I don't have anything to play it on.
What's yours and why have you completed it so many times?