Legacy Code Workshop
I would have rather we either do more structured TDD exercises or split into smaller groups to work on our team code bases rather than some of the time we spent discussing / reviewing code as a whole class. I just feel that the relative ROI of that exercise was lower than other activities from the 4 days.
How to improve:
Not sure, maybe we just needed to be better prepared with code to apply TDD to, even if it was re-implementing components we (as a company) had already written. In fact, doing that may have made the exercise slightly more comfortable (without looking at the old implementation), just for the purpose of practicing the technique, not necessarily rewriting our code base.