Is there a way to view/browse PDF files/graphs quickly while flipping through them in Ubuntu Narwhal (kind of like in OS X's Finder where it shows an "image" of the pdf when you select it without actually opening it, or you can press spacebar when the file is highlighted and it shows you some quick view of it)?
You can get a "coverflow" style browsing in Ubuntu! (Youtube).
What you need
What You Get
I hope this helps!