balamw- i've tried what you said to do many times, and i can't seem to get it to work. i keep getting the message "No such file or directory." can you please clarify what you said?
i was just looking at the "gibberish" in textedit, and i found a rational series of letters; the picture was taken from a fuji film fine pix camera: "FUJIFILM
hit enter after each line and type the word you edited out in place of "______"
its probably just a hidden file that your FUJI camera or FUJI software makes for Windows and it shows up in Mac OS X. you could probably delete it without any harm but keep it to be on the safe side.
If you're sure it's a picture file rename it whoa.jpg and open it in preview.
edit: unless it's a RAW photo, then rename it with the correct raw extension, but I've found that gif still open even if you name then jpeg ( preview is smart )