When making dough, The Bread Baker's Apprentice says to knead it until the dough's temperature (which those of us who are obsessive will actually take) reaches 77-80 degrees F. What you do from there may depend on what you are trying to accomplish.
For a consistent, speedy rise, your warm oven trick is perfect. This works well with sandwich breads and loaves which aren't intended to have big, crusty holes.
For hole-y crumb breads such as Italian bread, you want a cooler rise than a warm oven. This is because those big holes are encouraged by a long, slow rise, a light tough, and another long slow proof. In this case perhaps sticking it on top of your warm oven where it will get some heat or in a corner of the house near a vent where it is in the low 70s is ideal.