From experience, definitely a dog person.
I've had two cats in the pass. They were outside cats because of my mom, and... bleh. They ran away from you all the time, didn't like to be petted and all that jazz. One was given away, and the other ran away eventually. He only came back for food, and now he's just vanished. Then again... I was an obnoxious twit to them. :/ No wonder he ran away.
Now I have a retarded dog whom I love to death. :]
So while I wouldn't mind annoying other cat (whom I'd treat right), I love dogs.
They're always affectionate and happy to see you.
Everybody has such cute pets!
Especially the first two posters.