This episode has one of my favorite characters, Mike Franks, in a returning role. His was perhaps the best semi-regular.
The show is really about the epilogue of a current case that plays in flashbacks through this episode. As a milestone for the series, thus the "200" subject line, it ranks as one of the best. What did amaze me was that I missed the first airing. I'm quite glad I caught it as a re-run.
Most poignant was the sequence with Gibbs and his wife.