It's the worst job of the year for me, removing leaves from the lawn, but it must be done. A thick layer of leaves left on the grass will often kill the turf and can also promote diseases like snow mold.
Living in an oak forest, I've learned the lesson the hard way. I reseeded this whole lawn last spring, check out the video below. Now, I make sure that the leaves get blown off. Yes, Mr. Organic Gardener has a Stihl backpack blower. It's the best thing I ever bought and finally I'm getting all the leaves off by the end of November. Cooincidently the backpack blower is a great snowblower for my steep 600 foot driveway.
Once the leaves are off the yard, don't let them go to waste, they will make great compost. There are lots of different ways to deal with them. Some can be shredded and piled up over by the compost pile (you do have a compost pile, right?). Every time things from the kitchen are added, throw the same volume of leaves in.Mixing the brown (leaves) and green (kitchen scraps) will provide compost quicker.
There are some areas where leaves have been piled in the woods for decades, digging down below the first couple layers reveals wonderful black compost. No worries about pH, when leaves rot down they are pH neutral.
If your municipality picks up your leaves, they probably make compost out of it. Find out where they give it away and pick up some, hey they are using your leaves right?Get the leaves off the lawn and figure out a way to recycle them, you'll be happy you did when you see the nice green lawn and have all that great compost for the garden.