And--good news for the pro-choice crowd--you have choices. There are two male contraceptives coming to the market soon. The first is a gel that blocks passage of sperm (and physically disables those who pass through the gel), 100% effective for 10-15 years at keeping you from being a father. The other is a pill for men that stops production of sperm that has "aced tests in mouse testes" (try saying that five times fast).
My favorite part of these stories is what may become the effective marketing tagline for the BCP for men: "One company's toxin may be another person's contraceptive." There you have it, folks.