I've noticed that there are two infoboxes for TV show episodes. They are:
From what I can tell, there is no difference between the two other than that the former infobox accepts image files like this:
|image = Example.jpg
while the latter accepts image files like this:
|image = [[File:Example.jpg|280px]]
otherwise code shows up.
I was using the code for the latter for quite a while and was confused as to why the image syntax wasn't consistent between the two. Now I know--somehow there are two separate infoboxes.
I feel that we should move all TV show episodes (save for The Looney Tunes Show ones) to just one infobox for the sake of uniformity.