I would suggest a topic like "the internet" instead. Then you could make memes, but also something completly different like an internet addict, WoW players (if there's a difference
), you could focus on the technical aspects or something about Google/Facebook.
There are many movie genres which might be a good choice. Comedy, Romance, Fantasy, Hollywood blockbusters, your favorite movies as a kid...
Maybe an interesting topic would be "famous crimes ad mysterious deaths"?