Correct on #1. #2 (Cheap Trick drummer) is Bun E. Carlos. #3 (Blue Velvet singer) I was looking for Bobby Vinton, but it turns out Tony Bennett first covered the song - fortunately, both are valid answers.
DQs:
Born before 1980?
Known for the dramatic arts?
Have you played a computer expert, a concierge, a TV network executive and an unscrupulous Federal prosecutor? - Bob Balaban, in 2010: The Year We Make Contact, The Grand Budapest Hotel, Seinfeld and Absence of Malice
Did the Capitol Steps sing a song about your curious habit of referring to yourself in the third person? - Bob Dole (they joked that, when he got married, he said, “Bob Dole do”)
Were you born in London but grew up in Cleveland? - Bob Hope
Bob x3!
DQs:
Black?
An actor?
Best known since 2000?
DQs:
Are you a nervous young ensign with purple hair in Star Trek: Lower Decks?
Were you a shapeshifter who welcomed Thorin & Co.?
Did you win the unwelcome nickname “Commissary”?
Are you a nervous young ensign with purple hair on Star Trek: Lower Decks? - Yes, the adorkable Boimler
Were you a shapeshifter who welcomed Thorin & Co.? - Beorn, in The Hobbit
Did you win the unwelcome nickname “Commissary”? - Gen. Nathaniel Banks, after Confederate troops captured a huge amount of supplies from him
DQs:
Best known for music?
Asian?
IQs:
Are you the best-known person born in Hawaii in 1962?
Are you the AAGUS?
Were you his predecessor?