While you might not be able to replace Siri’s voice with GLaDOS (yet), you do have control over how your iPhone notifies you of incoming calls and messages. New to iOS 5, the iTunes Store includes a special tones store where you can purchase new tones starting at $0.99 for alerts, and $1.29 for popular ringtones. The tones available feature everything from Star Wars sound effects to your favorite music from the 90s.
