What's up with those pictures that look like X-Rays?
These pictures are known as "Glyphs" and first showed up on posters and online as part of the viral marketing for Fringe. Even though there only seem to be a few glyphs, depending on where the particle of light appears in the image makes many variations of the glyphs, and they all correspond to letters of the alphabet.For more information about the individual Glyphs, see the article on Fringepedia:
Who is The Observer and what episodes has he been seen in?
For a detailed article on The Observer and screen captures of his appearances:
What song was played in a certain scene/episode?
You can find a listing of the songs played during the show, including scene descriptions, here: [url]http://tvshowmusic.com/shows/fringe-music-season-4[/urlgo to tunefind.com website,there you can find songs played specifically for each episode of lots of tv series