Guilty...
My wife has always wondered why I enjoyed cleaning the tanks in our house. I told here it's like my own little Zen garden.
Every Sunday is cleaning day for the 125, 40 and 20. Currently using buckets but for time's sake will probably switch to Python/Aqueon pretty soon. Lifting 5 gallon buckets shoulder height as stated in a previous post does get a little old but in reality is really just a little too messy, I always end up moping the kitchen floor when I'm done (wouldn't mind skipping that last step).
Guess I really just enjoy it because I like having clean and clear tanks, along with the fact that I'm sure the fish enjoy a clean home as well.