I agree that oxygen is needed pre-fermentation but I always aerate after the wort is cool. There is a lot of info out there (on this site particularly) about hot wort aeration and how it can cause off flavors. Some believe it isn't an issue for homebrewers but I'd rather not take the risk....
Secondary: Chshre's Double Chocolate Oatmeal Stout
Conditioning: Sweet Cider
Drinking: Yuri's Thunderstruck pumpkin ale