1. Apple iPhone 4S
Leave it to Apple to provide the year's must-have device. Sure, the iPhone 4S has a dual-core Apple A5 processor, which is actually an ARM-based Cortex-A9 CPU with NEON SIMD accelerator and dual-core PowerVR GPU, plus 8 MP auto-focus camera with LED flash, face detection, 1080p video capture at 30 frames per second with stabilization. It's also equipped with radios for UTMS/HSDPA, GSM/EDGE,CDMA EV-DO with international roaming, WiFi b/g/n, Bluetooth 4.0, A-GPS and GLONASS alternative to GPS, compass, three-axis gyroscope, accelerometer, proxity and ambient light sensors. But what makes the iPhone 4S really cool is Siri, Apple's natural-language artificial assistant. Siri accepts spoken commands, performs complex tasks and when appropriate feeds commands and queries to back-end services for further processing and/or actions. Siri can schedule meetings, suggest restaurants, obtain driving directions or just about anything. It not only understands what is said, it comprehends what it meant. It's truly amazing. And very cool.