No u don't..... well that is partialy correct.
Most of the full screen work u've seen will have been made with panotools and and six shots... ie one for each side of the cube. This is due to the fact that u need a whole lot of data for a full screen and will lose out on detail and image quality when stretching to far. Also, u'll find that the fairly soft lens of Nikons fc-e8 will hardly come up to scratch when comparing it to those beatiful shots done by this team. They're most likely using a D-SLR with appropriatte lenses, good streaming and QT knowledge, first class PS work, good studio lighting..... All of these make a huge difference.
However, I've recently experimented with full screen and my Nikon Coolpix 4500 with success. Alas I don't have it online. However, I did only manage this by taking 3 shots of 183x 140 deg. That is that I zoomed in from the normal circular image so far that the top and bottom of the image touches the screen and the sides are cropped. Thus capturing a 140x183 deg image and using around 2000 pixels of image height or at least 3/4's of my sensor. I then input the three cropped images into panoweaver... which does actually cope well with this... and created a 2000x4000 image. Enough for a full screen.... but not to the same standard as the guys on the aforementioned page.
I'm working on it though and'll be in stuttgart for the Panotools workshop and'll ask on this matter and inform u all.
If I only had an hour to chop down a tree... I'd spend 45 mins sharpening the axe.