We just finished disc 6 of this box set, and were absolutely blown away. The producers of this series have definitely raised the bar, both with the dramatic and technical presentation of the second season. Not only do the stories remain compelling (particularly good are the "And Then There Was One," "Ellie," "Stalker," "Anatomy of a Lye," and "Felonius Monk" episodes), the DVDs are much better for season two. The picture quality is subtlely improved, the sound has been mastered in 5.1 surround, there are commentary tracks for selected episodes, and the special features make this even better than the first 6 discs.
If you're not familiar with the series, start with season one, and spend many compelling hours with the Las Vegas criminalistics lab. Almost of the episodes are exceptionally well-written, an unusual feat for a weekly TV series. The characters are evenly and consistently developed, and the series is consistently outstanding, particularly when viewed in-order and commercial-free. I can't wait for season three to release on DVD in March!