LogMein Ignition is not only functional but has a certain wow factor to it. Imagine whipping out your iPhone wherever you are and using it to control your computer at home or at work, including accessing all the applications. The app (for iPhone and iPod touch) costs $30, and a limited version of the service is free. As I understand it, the paid service, which costs $70 per year, allows you to access multiple computers. A recent survey by the company found that 57% of LogMein users now leave their laptop at home at least half the time when they travel and instead use their iPhone to access their computer remotely. The survey results — and stories about people using their iPhone to control their computer — are available in a free PDF ebook. There's also a great video demo.