He was forced to leave a couple of days ago. Where’ve you been?
Developers who write websites that are Windows MSIE only.
Man butt on otherwise good TV shows like Nip/Tuck. Or at least, flash a little man butt warning on the screen a half-second before, and maybe beep when it’s safe to look again. Damn NYPD-Blue for starting this horrific trend.
Having to get oil changes has to go. I am SO over it!!!
**Things That Must Go! **
People asking Dopers for lines to use on their crappy radio program.
Ok maybe I’m just overly suspicious.
The hour between 0230-0330 Mountain time when the Dope vanishes. That must go.
That or the insipidly stupid serious of judge shows that my coworker feels she must watch during that time. Shoot me Please!
I’ll watchdog that. I usually catch that segment on the way home from work. Anything from here shows up there, and I’ll shake my finger in the general direction of the Wasatch Front. 
Blue jeans with faded butts. It just looks like you sit on your arse all day, not cool at all.
Bras on cars. Just looks stoopid.
Rear Spoilers on front wheel drive cars. Just is stoopid.
We are everywhere.
Curses! Foiled again!
Work graves, do you?
Any finger shaking may be directed southward, as I am generally driving from Mapleton to Provo/Orem during Radio From Hell.
As A general thing: It is henceforth considered “poor form” for Things That Must Go to suggest that a group of people must go. Honestly, where will they all go? Instead, the preferred method will be to refer to the offending item, behavior, whatever.
Poor form: People who “farmer blow” in public.
Good form: “Farmer blowing” in public.
As per the OP, anything still goes, but bad form risks a stern down-nose sneering, unless there is no other way/no better way to make your point. Posts before this one are “grandfathered in”. 
…
People who read over my shoulder under any circumstances. No more will they annoy me! They must go!
Those stupid grills people put over their automobile lights. Mainly seen on pickups and SUVs. Now (at least in Texas) they’re putting 'em on the TAIL lights too. I guess the latest trend in “pretending you’re a studly offroader” is “pretending you’re a studly offroader who goes backwards a lot” ??
Jack-In-The-Box fast foodie joints.
So much salmonella that they qualify as Weapons Of Mass Destruction. 
Music in a vehicle turned up so loud it rattles the windows of my house. I don’t want to hear your stupid rap crap, so turn it down idiot!
Trash on the streets. There are trashcans on every corner–why is it so impossible to hold onto the empty McDonald’s cup until you reach the corner? Why must you pitch it in the middle of the block?
People who yell out their vehicle windows at me. There is absolutely no way that I’m going to answer you, nor find you attractive in any way, if you hollar, “Hey, Baby, you’s lookin’ hot!” from your car. What, do you expect me to cross the street, climb into your car and say, “Those are lovin’ words, sweetie!”? That is not happening.
People who mumble. If you want me to acknowledge you, pick your head off the floor and speak up! Don’t expect me to answer you if you can’t get past that oversized cow tongue in your mouth.
Low carbing - this must go. Not the people who are on the diet and have found it works for them. They can stay, and enjoy their practices. No, the trend of labelling everything “Lo Carb!” Outta here!
The current U.S. administration - it must go!
Low, low, low slung jeans - you must leave!
My Birkenstocks. 
They’re falling apart, and after the summer, must go.
Hear hear! The people that trash the streets must go as well!
People that don’t use their blinkers while driving must go!
Posts that say, “Things that must go must go!” must go.
And post that say, " ‘Things that must go must go’ must go", must go.
Whoops, I muffed it.
It should have been,
Post that say, “Posts that say ‘Things that must go must go’, must go”, must go.