Oh dear, so so many of the above.
I wish I wasn't a judger. I don't believe it's ever our place to judge anyone else, especially if you don't know them. Yet I do it all the time. Luckily, because I know it's wrong, I only ever do it internally (or on MN 
) so everyone I know thinks I am completely non judgemental and non shockable! If only they knew!!
The worst thing about the following list is that I do/am some of them so I am even judging myself! 
Plus I do far worse things!
So, here goes. I judge (more reasonable ones nearer the top of the list, totally unacceptable judging nearer the bottom):
people who drink and drive
people who smoke while pregnant
people who smoke around children
people who drive while on the phone
people who drive over the speed limit (less so on motorways)
people who tailgate
people who don't indicate
people who leave their young children home alone
people who leave their pre teenage children alone at night
people who (imo) do not supervise their children properly
people who don't take regular exercise (when they could)
people who feed their children lots of processed and/or unhealthy food
people who spread rumours and gossip about others
people who lie, steal, cheat and other general thought bad things
people who share their offensive views
people who swear at their children
people who swear in their children's hearing
people who allow their children to swear
people who don't engage with their children enough
people who don't make the most of their opportunities
people who always look on the negative side of everything
people who park in spaces they aren't entitled to
people who eat takeaways
people who eat in fast food restaurants
people who talk and laugh reeeally loudly in public
people who loud parent
people who boast
people who don't dress to flatter their figure
people who are dirty or smelly (or their clothes are)
people who buy their child every new gadget going
and the absolute worst of all (and one of my biggest secrets because I know how hideous it is, especially as a) I have anorexia and am underweight and b) know how many varied and uncontrollable factors there are around weight) ... scared to even admit it ...
very fat people This includes my own mother and a few good friends. They must never know this about me.
I know, I know, the issue is all mine. I project my own horror and unacceptability of fat. But there it is. I do it. But I would never show it.