National Rail have produced a great HTML5-based Departure Boards experience for Internet Explorer 9. Particularly like the use of the Pinning and Jump Lists and the nice, simple transitions.
Check out the video below or click the link and try it out for yourself. At this stage it’s a Departure/Arrivals Board application with live train times, rather than a full journey planner but I find it useful and fast. For me the key is the pinned jump list which puts their brand on the taskbar on a permanent basis and also gives me instant access to favourite stations, home, etc.