We recently started our 15 min - 30 mins/day cleaning blitzes. I had heard a variation of this idea from a professional de-clutterer a while back. His idea was pretty hard core--to fill 1 black garbage a bag a day for 7 days each month by spending 30 mins each night for a week getting rid of junk.
Our version of the concept was adapted to household jobs. It is amazing how much you can get done when you know that there is a time limit. And you don't dread the jobs (as much!) Now the weekend full out clean doesn't need to happen and it has brought more fun and spontaneity instead. If everyone in the household participates, it has the potential to create fun (we set a timer and make it like a game) and transforms tasks that isn't fun for most people to something much more tolerable.