All correct
Also right
Here comes a softball:
HB_4: “Everything I needed to know about Topiary Art, I learned from Johnny Depp”
Z_9 “Everything I needed to know about surveillance, I learned from Emilio Estevez.” (at least two - name either)
Z_10 “Everything I needed to know about surveillance, I learned from Roy Scheider.”
Z_11 “Everything I needed to know about surveillance, I learned from Gene Hackman.” (not the one with Scheider)
Z_12 “Everything I needed to know about surveillance, I learned from Rosie O’Donnell.”
HB_4 Edward Scissorhands (guess from memory)
HB_4 Edward Scissorhands
Z_9 Stakeout and *Another Stakeout *
Z_11 The Conversation
Z_12 She was in Another Stakeout as well but could this be Exit to Eden?
O-3 Bean was correct.
O-5 Everything I needed to know about being president of the United States I learned from Jack Nicholson
O-6 Everything I needed to know about being president of the United States I learned from Bill Pullman
O-7 Everything I needed to know about being president of the United States I learned from Dan Hedaya
O-8 Everything I needed to know about being president of the United States I learned from Michael Douglas
O-9 Everything I needed to know about being president of the United States I learned from Anthony Hopkins
O-10 Everything I needed to know about being president of the United States I learned from Jon Voight
O-11 Everything I needed to know about being president of the United States I learned from Henry Fonda (at least 2, one as current, one as future)
Told you that was easy.
HB_5 “Everything I needed to know about model building, I learned from one of the Balwins.”
All are correct, but I had at least one other in mind for Z_11, and I can’t confirm the Exit To Eden from my own memory (didn’t see it to recall it).
“Baldwins.” Sorry
Hanger from previous page
Z_6 “Everything I needed to know about being a news anchor, I learned from William Hurt.”
New ones:
Z_13 “Everything I needed to know about the legal profession, I learned from John Travolta.”
Z_14 “Everything I needed to know about the legal profession, I learned from Paul Newman.”
Z_15 “Everything I needed to know about the legal profession, I learned from James Stewart.”
Z_16 “Everything I needed to know about the legal profession, I learned from Rebecca De Mornay.”
Those are correct.
Z_13 A Civil Affair
Z_16 Guilty (I think, it has Don Johnson, but not sure of the title)
Close enough for internet gaming purposes! 
A Civil Action
Guilty As Sin (Don Johnson is the proof)
Z_15 Anatomy of a Murder
I_L_10 “Everything I needed to know about espionage, I learned from Robert Donat”
Z_15 is right.
No idea on I_L_10 except I did hear something recently about Donat.
I_L_10 "Everything I needed to know about espionage, I learned from Robert Donat"
“The 39 Steps”
I_L_10 The 39 Steps
Not yet answered from me
HB_3 “Everything I needed to know about butter in Hell, I learned from Sir Ian McKellen.”
HB_5 “Everything I needed to know about model building, I learned from Alec Baldwin.”
New
HB_6 “Everything I needed to know about having a conversation (but not with a pirate), I learned from Wallace Shawn”