Crossover

[Gail Allen]

Since you're reading this subforum, I assume you've read a book or two in your life before. And maybe even many more than that. And maybe, if you're like me, you've thought at some point: Wouldn't it be fun if this character from this book was part of the plot in this other book? Or: Wouldn't it be fun if these two characters from these two different books met up?

Well. I have. A lot. Sometimes I've even had the chance to write out Roleplays based on these ideas or, when that wasn't the case, imagined in elaborate detail for myself, what that would look like.
Now I am curious though what books and characters other people would like to see this with? And why is that particular crossover interesting?