I just completed a review for the Hammock Bliss Sky Tent. It's posted on youtube, here it is for ya:
Short synopsis: the Sky Tent integrates the tarp with the bug net so it is compatible with just about any open top hammock. At 43.7 ounces it is probably heavier than many ultralighters (like me) want to carry regularly, but if you live in a place with heavy mosquito populations it may be something you want to have in order to deal with the pests. I would have loved something like this when I was stationed in Louisiana.
Updated 9-13-2011 with about 4 minutes of material to correct or clarify information from the original review.