As some of you may or may not know, there have been some additional Observer sightings in and out of the show. I have already covered one of these instances, (the Fringe Season 2 Poster) but there are still quite a few that I have missed. They are below in no particular order, mainly because I am tired.
Fringe Title Sequence - During the Fringe title sequence at the beginning of each episode just after the words "Dark Matter" appear, the words "Observers Are Here" appear for only a moment. They are hard to spot because it looks as if someone wrote them on a fogged piece of glass with their finger. They are below in a red box.
Fringe Poster - In the below fringe poster, where we see Olivia inside of the tank, you can see the word "observed" written just above one of her hairs. The picture below shows you where on Olivia the word is.
This picture zooms in on the word because it is hard to see in the above picture.
Entertainment Events - The Observer seems to really like this universe's sports and entertainment. The below are instances where the Observer has shown up at 3 different sporting events and 1 entertainment event. He is in the customary red box for anyone who needs him.
1. He was at the NASCAR Sprint Cup auto race in Texas, on April 5, 2009.
2. He was at a NFL football game between the Giants and the Eagles.
3. He was in an American Idol episode.
4. He was also at a 2009 MLB All Star Game.
That is all for now.