In my experience, they don't seem to do well in RAID. They tend to drop out of a RAID container at random. I don't have any experience with them in VOD equipment, but they do seem to be problematic in DVR's.
As a general storage drive, they are fine.
*NOTE* - most of my experience is with the earlier 1.5Tb WD green drives. I'm assuming the 1Tb drives are just as finicky. Because of this i tend to stay away from WD green drives. I've had no issues with their blue and black drives.