In this 
very long thread over at Troof Action.  It starts with Ronnie Bushnell:
I’m not sure I understand correctly the problem 
some of the people on this forum are having with CD (controlled 
demolition}.  I wish someone would volunteer to explain it to me.  
Either I don’t understand what I’m looking at in the videos of the WTC 
being ripped apart by explosions or I’m just plain stupid, which I guess
 is not an entirely an unlikely possibility.
Heh, you can say that again.  Ronnie for the most part has confined himself to 
one thread over at TA, and it's a doozy.  It just goes on and on for 25 pages, and after the first page or two, I'd guess that 95% of the posts are from Ronnie himself.
But he has a question for the TA folks:
If there is some doubt about CD (not music), then
 that seems to me to indicate that someone may have made all this crap 
up.  Is Richard Gage lying?  Is Dr. Jones lying?  Does it mean that they
 all lied about the supper nano thermite being found in the dust?  If 
they did, we are all in deep, deep, deep, deep, deep dodo, and I 
personally don’t care to be in any kind of dodo.
 Well, the good news is that the dodo has been extinct for centuries, so I don't think you have to worry about it.  The bad news?  Brian tried to reassure Ronnie about Box Boy Gage and Mr Perpetual Motion.  Regarding Gage:
He has an unfortunate tendency to play to his 
conspiracist fan-base, and certainly he is wrong at times (as we all 
are), but I don't think he lies.
I've always been skeptical of the nanothermite 
claims and I felt that the Jones team did not take sufficient pains to 
distinguish their chips from ordinary paint, but though Dr. Jones may 
prove to have been wrong I see no reason to think he was lying.  The 
kind of public adulation Dr. Jones got from his admirers when he first 
started lecturing on 9/11 is very bad for a scientist's objectivity.
 Brian's 
always been skeptical of the nanothermite claims? And as for the question of whether Gage lies, Oystein points out the ridiculous dissembling that he did about the results of the Millette study, when he failed to mention that it proved that there was no nanothermite in the WTC dust.
AE911T is at least mistaken, if not adding a second lie, when they imply
 with the expression "the primer paint used on the WTC steel" that there
 was only one such formula. There wasn't just one. There were at least 
two, and neither Millette nor Harrit e.al. have ever test any of the 
other WTC primers, and thus ruling out the chips are WTC primer has been
 fallacious.
 Anyway, the thread goes on for pages and pages, and eventually a Truther named Kat Dorman comes along and starts cleaning Petgoat's clock:
The first is that steel columns failing in axial 
compression afford the same resistance (capacity) over the entire range 
of compaction travel as they do over the linear response range.  They do
 not.  A rough rule of thumb is an average capacity of 10-15% of peak 
capacity.  If a column has a maximum capacity of three times the imposed
 load, it then would have an average capacity of 0.30 - 0.45x the load. 
  Thus a load which already possesses sufficient momentum to overcome 
the peak capacity will experience a large drop in resistive force as 
that peak is passed, with the average resistive force giving a resulting
 average acceleration over the interval of between 0.55 and 0.7g.
Pretty much what was measured for the early descent of WTC1!
But that's only the early descent... and that's all Chandler measured.  
Other higher resolution measurements extending slightly further 
indicated a rapid decrease of acceleration magnitude immediately after 
that period, and later measurements of the WTC1 leading
 ejection front showed minor variation about a quasi-terminal velocity. 
 Extrapolating a constant velocity from the measured region to ground 
level gives a collapse time of between 14 and 15 seconds.  Therefore, 
there is strong reason to believe the overall collapse dynamics 
converged rapidly on dynamic equilibrium of the opposing forces and so 
zero acceleration.
The second misconception is that the capacity derived from perfect axial
 alignment is available during collapse.   The statements above 
concerning the load displacement relation for steel columns in axial 
compression apply to the ideal case of perfect end alignment.  The 
capacity of a column is proportional to its cross sectional area.  
Lateral displacement of the upper block in the amount of only a few 
inches will in itself reduce capacity to a fraction of design maximum.
While Kat is a Truther he or she does not believe in Controlled Demolition, and obviously is orders of magnitude smarter than Brian, but of course Brian cannot admit this and so he starts engaging in the sort of hostile behavior that Carol Brouillet and Willie Rodriguez can recall.  But what's really funny is that Brian thinks he's winning the argument (and yes, somebody quickly mentions the Dunning-Kruger effect, where the more incompetent a person is, the more competent they think they are).  It just goes on and on from there, and Brian starts pissing off the rest of the TA gang, particularly Snowcrash:
You're one miserable troll Brian.
You are STILL pimping that "circular argument" reproach while it has 
been debunked pages ago. A domino falls because a domino falls. Is that a
 circular argument? No, it isn't. Of course not. It's a simple cause and
 effect chain where each element is physically and positionally distinct
 from the element causing its demise. You pretend you haven't read or 
haven't been made aware of this rebuttal of your ridiculous fallacy 
allegation, because you mean to irritate. Because you're butthurt. 
Because this is your disruption strategy, because you're so "polite". 
How utterly pathetic. You're not polite, you're a cunning troll who has 
optimized his survival tactics. 
You've been repeatedly asked to back up your ignorant assertions and  
the AE911Truth talking points you parrot. You simply don't. You think 
you'll be just fine trolling. I asked a couple of additional questions 
two times now and you've ignored them too. You claim not to believe CD 
but you've made a laundry list of declarative statements which match the
 description of a Controlled Demolition believer to a T. Your sole 
reason for non-committal is plausible deniability should any of your 
spurious claims be proven unequivocally false, but you might as well let
 go of that tactic, because, as you've demonstrated in this thread, 
you'd lie about visual observations even as they stand facing you when 
you quote them in reply. A shameless liar of your caliber needs no 
additional insurance policies.
 Very entertaining.