Next time you take a leak, shut off the stream. Do this a few times so you know what muscles to contract. Now when your away from the can, contract these muscles to strengthen them. When your with a woman, contract the muscles and you will last longer. Since you have exercised the muscles your orgasm will be stronger and your ejaculate will shoot farther.
I know that a few bumps of heroin can make you last a good hour or more, but unfortunately you can't pick that up at your local ********. :anonymous
Other than that I would take a look at all these various pills they have on the net and find out first off if they work, and second if they do then what in them allows you to last longer. Any creams I would almost guarantee are going to have some type of numbing agent in them, and this could only be used if you're wearing a condom. Everything else I can think of has already been suggested.