Google I/O: Google Search
Learns your standard route to work and suggests faster options based on traffic/time of day. Google Now will automatically detect your location when at a train station and gives you the train schedule. Google Now will automatically learn your favorite sports teams and keeps you up to date with scores. Google Now monitors your appointments, and tells you when to leave based on traffic. Google Now learns your habits, for instance you go to the gym every day, and will automatically find gyms for you when you travel.