For example one of the problems I have is that I found several files from the old hard disk (i.e. - more then 15years have passed since the last time I used these files or my brother did). These files do not have any .info file and therefore I have no idea whit what program I can open these files. I do not know if these files are images or some save files from some game!
You should install deficons which automatically gives an icon (if not one already) for known filetypes.