It was an amazing way to learn new vocabulary. If you haven't played, it's a 4x4 grid of words with 2 teams guessing which words belong to which team, giving additional words as clues.
After the board setup, the French players would explain the single, double, sometimes triple meanings of the words and I'd write them down into a notebook. Then, using a English-French dictionary I'd come up with clues that could fit. It worked surprisingly well, I think perhaps given the similarities between many English and French words. I wonder how it would work with a much more different language.