I know this will sound weird, but I had (again) nothing to do at work and I was bored again.
And when I am bored and not allowed to do other things I drift into daydreams to create scenarios and imagine what would happen. I usually take some fictional characters and mix it either with our real world or another fictional universe.
For example: Imagine this setting. Smallville, 6th season. Before the Lexana wedding. Lana doesn't know Clark's secret yet. What would happen if someone gave her the Spider-Man DVD with a little note that she might find some of the parallels interesting? I think it would be quite interesting to watch her watch that DVD, slowly understanding some things.
Another example: What if the Smallville gang falls through a dimensional portal and and lands directly in Hellmouth town Sunnydale and subsequently runs into the Scoobie Gang. I try to imagine how the different characters would react, when for example Xander would start to ask questions about Clark's abilites who in turn has no idea why the hell this guy knows everything about him.
You think I am weird? Maybe, but also really bored.