It's a DVD (not a CD) celebrating their 10th anniversary. The last DVD Language.Sex.Violence.Other? was released last autumn to accompany the last album (also called L.S.V.O?) which included a making-of documentry of the album, live tracks from that tour the 4 promo videos from the album. Then before that it was the Live From Dakota album.

OK, so it IS another compilation, but it's a complation of footage from the past 10 years, not a greatest hits album. They've never had one. The only thing that comes close to a greatest hits compilation for them is the Live From Dakota album. I agree that 2 DVD's within the last 9 months is rather odd but they were each for different reasons.