Over the next week, we’ll be tallying your votes through five rounds of head-to-head matchups (thanks to our friends over at Grantland whose Wire character smackdown inspired us). Rounds 1-3 pit products against their kin in four divisions: Vehicles, Science & Technology, Electronics, and The Internet. The ultimate goal: to name the most important product of the last quarter century. And so today we begin with round one: 32 innovations enter, 16 will move on. You may cast only one vote per matchup, so deliberate carefully. This poll will close Thursday, December 6, at 16:00 Eastern time.

Electronics

Best Of All Time Shootout: Phones Best Of All Time Shootout: Cameras Best Of All Time Shootout: TV Best Of All Time Shootout: Gadgets

Vehicles

Cars ISS vs. ABS High Flyers Warplanes

Science and Technology

Giant Projects Health Genes Medicine

The Internet

Google Tools Ecosystems Networking Wireless