I feel a little inadequate right now. Sure, I have the following Pic-Tac-Toe to share, my third so far, and have two more on deck. But after Shakespeare Teacher unleashed his phenomenal 3-D puzzle a few days ago... I mean, how do you follow that? I did my best and only solved less than half of the dang thing.
Below you will find 9 images in a 3x3 format. Each row, column, and diagonal has a distinct theme. That's 8 themes total.
SOLVED! Bill of Shakespeare Teacher does it again, but it took a little longer this time. He got all 8 themes and came up with a nice alternate theme for the middle column. Check the comments for the answers.