IQ: Does John Cleese credit you with starting the Spanish Inquisition? 
Yes, I am Xander Berkeley, supporting star of the big and little screen, most notably recently from 24 and The Mentalist.
Well done, astorian, You get “Y”.
A personal note: Madame P. is having surgery on Friday. It isn’t major; it isn’t life threatening, but she will be at the hospital for 3-to-5 days, and wants me with her as much as possible. Soooo, I won’t be around until next week sometime. Have fun.
Why, no. Why do you ask? 
Congrats, astorian, and hope Madame P.'s surgery goes smoothly, Prof.
+1, she is in our thoughts.
Wishing you and Mrs. Professor well.
Hmm… okay, I have a Y person. Good luck.
IQ1: Are you a guitar player who typically wears a schoolboy uniform and does the Chuck Berry duckwalk?
IQ2: Did you create the comic strip Blondie?
IQ3: Are you nicknamed “American Moses”?
IQs:
Are you part of a famous musical trio?
Are you best known for a cartoon character’s voice you provide?
Was “You know nothing, Jon Snow” your catchphrase?
Not Angus or Chic Young.
Not… Brigham Young? (The only “American Moses” I actually KNEW was HArriet Tubman)
Not Peter (Paul and Mary) Yarrow
Not Ygritte
Take a DQ for #2, since I can’t think of a Y who does cartoon voices.
Previous IQs:
Are you part of a famous musical trio? - Yes, Peter Yarrow
Are you best known for a cartoon character’s voice you provide? - Yeardley Smith does Lisa Simpson’s voice
Was “You know nothing, Jon Snow” your catchphrase? - Yes, Ygritte from Game of Thrones
DQ:
Real?
IQs:
Were you a star of Baywatch?
Were you Holmes’s detective partner?
Were you one of two aboard Columbia’s first mission?
SUMMARY:
- Real person
Dang- don’t know the Baywatch star. Take a DQ
Not Yo-Yo
Not pilot John Young
IQ: Did you famously play an NFL playoff game on a broken leg?
IQ2: Do you have a “Heart of Gold”?
Not Jack Youngblood or Neil Young.
IQ: Are you a lifelong Brewer in the 3,000 hit club?
IQ: Were you the first AL player with 400 HR and 3,000 H?
correct x3
Young x3!
IQ1: Are you a former quarterback for the Baltimore Colts, San Francisco 49ers, and the New York Giants, inducted into the NFL Hall of Fame in 1971?
IQ2: Did you play the role of Caroline Holden in Baywatch?
IQ3: Were you Cat Stevens before converting to Islam?