Shih Tzus.
Alot of them that I know are just super sweet. Granted, I have had my fair share of nasty ones at work! Some are just **** ugly!
We have a clinic dog at work though that is a shih tzu. Mr. Charlie Brown (B, Mr. B, Brown). He is like 16 and just the most wonderful dog! Except that he is a little senile which is why he now lives at the clinic (floors are easy to clean, and noone cares if you bark all night in the kennel). I just adore that dog so much! Alot just are so joyful though. Perhaps never will have one though.