Cheap, delicious donuts available 24 hours a day, 7 days a week? Going to BoSa is like having died and gone to donut heaven.
I can't comment on the ice cream they also apparently sell, but you really can't go wrong with any of their donuts. They're generously sized, super-tasty, and the only aftertaste is of baked and/or fried goods made with love.
If you're in Chandler, BoSa's pretty much conveniently located in the middle of the city. If you're outside of Chandler, it's well worth the drive (or if you're crazy like Brett B., the walk).
Grocery store donuts will suffice when I can barely drag myself out of bed, but when I want the good stuff, I go to BoSa.