I have several images that are either long and skinny or narrow and wide so the thumbnails look horrible.  The narrow and wide one is so small and the long and skinny one is huge and blurry.

You can take a look here to see what I mean.

I've played around with the thumbnail sizes but it doesn't seem to help.  Any suggestions on how to set this up so the images are a little more normal?

I was able to fix it.  I just changed the Show GIF thumbnails without using GD Libraries from yes to no and it fixed it.

Glad you figured it out.