Correct, correct, Barbara Mertz (who also wrote as Barbara Michaels) - she wrote, as Mertz, a pair of non-fiction books on Ancient Egypt (she had a PhD in Egyptology).
IQ1: Were you frequently disappointed by the lack of an Earth-shattering Ka-boom?
IQ2: Are you a paranoid android?
IQ3: Did you wonder what’s going on?
IQ1: I am not Marvin the Martian.
IQ2: I am not Marvin (from Hitchhiker’s Guide).
IQ3: I am not Marvin Gaye.
IQ1: Take a DQ.
IQ2: I am not Maxwell Smart.
IQ3: I am not Midge.
1. Take a DQ.
2. I am not Miriam.
3. I am not Dmitri Mendeleev.
DQs:
1. real
2. male
3. first name starts with M
4. living
5. known from the arts
6. known for the performing arts
7. known partly for acting
8. American
9. Caucasian
10. worked in TV, not best known from it
11. spouse was famous also
12. born before 1960
13. born before 1950
14. has written songs
IQ: Did you sing the title song to High Anxiety, was married to Anne Bancroft, have a hit with The Producers twice, and are currently working on The History of the World, Part II?
Johnny Mathis performed The Twelfth of Never, so 1 DQ reserved if I’m wrong on Mel.