- Reality (real by definition, but boring choice)
- True love (real, but boring choice)
- Free will (this is an interesting question. I think that from the viewpoint of our linear existence, we have free will)
- Honest politician (I know Senator Todd Akin is, we're friends with his family)
- Perl 6 (real, but I don't care)
- Duke Nukem Forever (real, but I really don't care)
- Nessie (probably real)
This list basically boils down to a toss-up between free will and honest politician. For the sake of simplicity, I think i'm going with honest politician. We can sure use more of those.