I'd have to agree that the guys fixing the power lines up and down the country in horrendous conditions are about near the top of my list.
Also the person at varsity who handed in my lost bike glove-hero-it was the middle of winter and COLD. Lots of good people there, especially those that give you the benefit of the doubt.
Finally, a good police story: A couple of years ago I woke up freaked out at an odd noise outside (sounded like a kid screaming their lungs out every five-ten minutes) and being a little paranoid, rang the cops. I got a very helpful call centre lady, the police turned up and I didn't have to go outside and wait for them at the gate. Being a scared fourteen year old who didn't like the dark, that was the best thing.