Thomas talked about the 2 Lidar companies they hired to collect the whole country since only 1 could not get the job done. I was reminded of the Scankort DSM data available via worldwind. Apparently Scankort went bust due to management failure and was gobbled up by Fugro. Somehow in the turmoil the data was released to NASA and is available for us to enjoy KMS's work.
For a few beers (not delivered yet) I hacked up a terrain manager to go with World Wind Java , so that you can turn the DSM on-off and compare with underlying SRTM. The results indeed show trees, while SRTM shows - well tree hills.