Google and T-Mobile introduce the Android-based T-Mobile G1 smart phone to much fanfare at an event in New York. The mobile and wireless gadget, available Oct. 22 for $179 and a two-year plan from T-Mobile, promises faster Web searches and better access for Web applications. Google co-founders Larry Page and Sergey Brin make guest appearances on roller blades. Why? To highlight the G1's fine mobile theme.