I read in a thread here somewhere that questions/complaints about board performance had been “done to death”. The plane on a treadmill thing has pretty much run it’s course, too (in all honesty I can’t imagine how or why it gripped the imagination of dopers in the first place). I’ve posted a lot about my balls and my various sexual perversions, but I don’t think that stuff ever gets old.
Care to add anything to the list? Are there any thread titles you see and sigh “Again?”
Things that have been done to death on the SDMB.
twickster stole my answer.
I was going to add a few more, but you know, even though we see some topics pop up over and over again (“Where did you get your user name from?”, e.g.) I don’t really mind, because every time it comes up again, we generally see some fresh faces posting. I mean, just because someone asked everyone to post where they lived back in 2002 doesn’t mean we can never ask that question again.
I agree, this is an issue those of us who have been here for a while will just have to live with. New People join all the time, and sometimes they want to ask questions that have been asked her ad nauseum…just the name of game.
Global Warming.
Bush Sucks.
How does something hurt the Democrats?
What are Hillary’s chances?
Bush did something that sucks.
Someone else did something, so Bush sucks.
Why did my thread get closed?
Anything to do with cats, Lord of the Rings, or whatever inane television show.
Every time a movie is made that originally came from another source, such as a book or a Broadway play, the movie sucks, man. It’s so stupid. They changed everything that made it good, man. [Performer/Director] is a no-talent hack.
Oy, the drama.
I’ll throw a log on the fire. 
James Randi and the Million Dollar Challenge issue.
Threads with MMP in the title - seems like we have one every bloody week!
Geeze, nobody’s mentioned “gun stuff”?
Peace,
mangeorge
<snerk>
Anything that has ‘jumped the shark.’
Smilies.
Why do girls only date assholes?
Is God a homo?
"Should I ask her out?’
It’s really time for a new phrase to mean the same thing, because if you’re closest cultural touchstone is Happy Days then you’ve, well, you know.
In Soviet Russia, dead things on the Dope do you!
j/k actually. I know it annoys the crap out of some people, but an appropriately-timed (and -themed) Smirnoff line always makes me smile.
Have I/Was I/Should I threads. If you have to ask a question like that here, then You did/You were/You should have.
The Simplest Task Query. Not limited to but including:
Cleaning something.
Ironing something.
Cooking something.
Maintaining something.
Looking something up.
I’ve always thought that the folks here were a fairly erudite bunch, but do you seriously mean to tell me that a Doper needs an opinion on how he should wash his fucking car?
There’s a bajillion “Ask the _____” threads out there.