Transport for London used to have a nifty Palm OS app that allowed you to download train timetables to your PDA. It was a bit limited: you could only have a single route and a set range of hours, making it a bit useless in practice. No wonder TfL withdrew it.
So I’m delighted to discover [via Digital Lifestyles] Fahrplan, available from Deutsche Bahn. Type in as many routes into the web site as you like, for whatever time periods you want, and the site will produce timetables in Palm and other formats. Download the free viewer and you’re sorted. And yes, it works with UK train stations. Amazing.