I worked on RefundRoadtrip.ca for H&R Block with Jakob Kulzer, and we launched the site last week.
This was an interesting challenge, as there was a lot of integration between Grails, AJAX and external APIs from AddThis, Google Analytics, YouTube and the Google Maps API. Jakob wrote most of the YouTube upload code, while I helped him with a lot of the account / analytics / backend CRUD stuff. I also wrote the stop editing layer, where we repurposed and skinned the google maps API.
It was a neat project, check it out Refund Roadtrip