I took my then-girlfriend to cinema for Prometheus, convinced by the "TED 2023" trailer that it's going to be a nice transhumanist sci-fi. I didn't lose the girfriend that day, but I did lose my sci-fi cred - the name of the speaker in that trailer, Peter Weyland, should have rung a bell.

(For those who, like me then, don't know the reference - that's Weyland as in Weyland-Yutani, the evil megacorp that sent the ill-fated crew of the Nostromo to their deaths in the movie Alien. Yes, Prometheus turned out to be an Alien prequel.)