At 1:11-1:12, you will see Greene standing (back-to-back) with Thompson. As we know, Thompson is a legitimate 6'11'' player. Here is the video:
[youtube]http://www.youtube.com/watch?v=rt1EBCvn4uA&feature=player_embedded[/youtube]
And here is a picture of them (credit goes to ZenBaller from StR):

Greene has a good inch or so over Thompson.
What do you guys think?