Correct on all three. As to the second: https://www.youtube.com/watch?v=dJMqUKblVgA
IQs:
Did you unexpectedly speak Jive?
Did I once meet the actor who played you, his most famous role, and write about it on the Dope?
Did you lose the Battle of Franklin, and badly?
Has there been a ruling on my DQ?
They used to be, but we’ve been going strong all summer…
Thus far only Prof P has commented, and he said yes. I’m still undecided.
FWIW, I would say that Martin Van Buren is a “V.” You would never refer to him as “Buren,” and you find him in the dictionary under “V.” Compare to, say, John Nance Garner, who invariably used his middle name but whose last name clearly begins with “G.”
Just my two cents’ worth.
I also vote Martin Van Buren is a V. Astorian still hasn’t gotten over the shock apparently. 
Not Billie Holliday, Bobby Fischer or Boris Spassky.
Summary
Not Ben Gunn from Treasure Island…
Take two DQs for the other questions
Not Barbara Billingsley in Airplane!
Done know the actor in #2
Don’t know who lost Battle Of Franklin.
So, you get two DQs.
Anyway, sorry for keeping you guys waiting. It’s Labor Day weekend and I’ve had a lot of things going on with my family. I MAY or may not be back on the SDMB today.
I withdraw my sneaky Van Buren question, and its earned DQ.
IQ: Were you the autocratic head of the IOC?
IQ2: During the 80s did you tell viewers,“You are looking LIVE…”
The others are also from Treasure Island Blind Pew gave Billy Bones the Black Spot.
DQs:
IQs:
Previous IQs:
Did you unexpectedly speak Jive? - Yes, Barbara Billingsley in Airplane!
Did I once meet the actor who played you, his most famous role, and write about it on the Dope? - Keir Dullea played astronaut Dave Bowman in 2001: A Space Odyssey. For my encounter with him, see here: I met Keir Dullea tonight! - Cafe Society - Straight Dope Message Board.
Did you lose the Battle of Franklin, and badly? - Confederate Gen. John Bell Hood (his name is always given in its entirety).
DQs:
Male?
Political/military?
IQs:
Were you obsessed with Moose and Squirrel?
Were you an ancient king of Rohan after whom a prominent horse was named?
Are you noted for your skin color, tendency to cry and love of wine?
Ahem.
IQ1: Are you an English poet known for his idealistic war sonnets written during the First World War?
IQ2: Are you the only native of Great Britain to have been made a Doctor of the Church by the Pope?
IQ3: Are you the inventor of the first mechanical computer?
Not Avery Brundage.
Not sure who #2 is, so take a DQ.
Summary
Not Brainiac.
The other two… well, I haven’t read comic books since the 1980s, so take two DQs.