Here is take 1 of the migrate module screencast: http://mikeryan.name/sites/default/files/u3/migrate_demo.mov
I produced a mobile-compatible website for delivering 2008 U.S. Presidential election results to hand-held devices. This involved modifying the Drupal FeedAPI module (at that time still in beta) to read custom fields in addition to standard RSS fields (patch submitted).
As a follow-up project, in two days I created a system to take XML feeds of raw election data and produce mobile-compatible XHTML pages to present the results, for live updates on Super Tuesday. This system included a templating system so the client could easily style it to their own needs (they reported it took half an hour with my delivered system to complete the theming and customization), and has remained in operation through subsequent primary elections.
Just quickly dropping a couple of interesting links here, to check out:
Based on some discussion at last night's Boston Drupal Meetup, I'm thinking about pursing content migration as a specialty when I get my consulting business fully launched. I've dealt with that in my previous consulting life, and in the current day job went through a major (2-year) data migration project, so as I said on my blog I know a little bit about fitting round data into square rows. Some initial research to do: