Corrupted by the likes of Ken Jennings and Shakespeare Teacher, I discovered the puzzle called Pic-Tac-Toe. Originated in Games magazine many moons ago (and later discontinued), the idea is to compile a series of 9 pictures in a 3x3 grid so that each row, column, and diagonal holds a distinct theme.
Hard as it was solving them, creating one is even harder. Here's my virgin effort. Can you figure out all 8 themes (3 rows, 3 columns, 2 diagonals)? Leave your guesses in the comments. Good luck!
SOLVED! Bow down to a pair of dominant players, who figured out the whole thing in half a day. Credit (but not answers) given below. Avoid the comments if you want the puzzle to remain unspoiled and try it yourself.
Top row: solved by Bill of Shakespeare Teacher
Middle row: solved by K-Lyn of And She Was...
Bottom row: solved by Bill
Left column: solved by K-Lyn
Middle column: solved by K-Lyn
Right column: solved by K-Lyn
159(\) diagonal: solved first by K-Lyn (by 4 minutes!)
357(/) diagonal: solved by Bill