Siri

One of the new features of the iPhone 4S with iOS 5 is Siri. Siri is a personal assistant like feature that provides some rather good information. You can search for "Who is Tim Cook" and it will bring up Wolfram Alpha's results. You can schedule reminders and even send text messages right from Siri. Sometimes when you ask Siri something interesting it responds in a rather cheeky manner. Below are some of the things that Siri has managed to tell me already in the hours since I have really been able to play with it.