I realized recently that it seems like a lot of people have a different type of emotions than me. I've always been pretty emotionally flat and un-empathethic (like my dad). I always have to force a smile when someone tells me about something good that happened in their life or pretend to be sad when someone I know dies or gets injured. I feel angry and sorta happy, but that's about it. I feel nothing for others. Is this normal or is there something wrong with me?

Actually, I'm going to disagree with myself. I don't think it has to be. I think we're all dramatic, ridiculous, exaggerated, soap opera versions of what we really are.
You know, like, little Billy scored three goals in the under 9's football match. It's not amazing. He's a striker and he's playing against nine year olds. If, on his own, he outplayed the fully-grown Brazilian national team, that'd be amazing.
Hmm, spot the grumpy hungover man posting on IIN. :P
And then when they do actually say something interesting you end up reacting the exact same way you would to all that trivial crap they come out with. Or maybe that's just me:P.
Hmm, maybe I'm a bit grumpy too.:P Except I'm always like this and I can't blame alcohol:O! Yikes.
I don't fake emotions, I just don't show the ones I do feel, around people. Though, I am an overly emotional person in general (I'm a chick.. surprise!).
And I also dont see the big deal about kids, whats the need for running over to them, picking them up, going nuts over them?
I was just comparing it to something I thought you'd relate to :)
When I am genuinely showing an emotion, I feel like it will appear strained 50% of the time because I was raised to repress everything.
To be honest, I'm surprised no one has yet told you you have an autism spectrum disorder, this site being so big on throwing out diagnoses left right and centre.
In case it wasn't clear, I don't think you're autistic. I voted normal.