Answer:

who

Answer	Crossword Clue
WHO	Which person?
WHO	Jerome Kern query
WHO	Which of you

WHO	".. Framed Roger Rabbit"
WHO	Sci-fi Doctor
WHO	Assn. with a disease outbreak section on its Web site
WHO	First baseman in a classic comedy sketch
WHO	Sci-fi show with companions, casually
WHO	"Never heard of him ..."
WHO	Reporter's question
WHO	He's on first

WHO	Doctor .. (British TV series)
WHO	Horton heard one
WHO	Abbott's first baseman
WHO	What Horton heard
WHO	Question of identity
WHO	Woodstock's The ..
WHO	"Do I know this person?"
WHO	The person in question?

WHO	"Gimme their names!"
WHO	Relative pronoun
WHO	A question of identity?
WHO	Fictional first baseman
WHO	Townie hated by the Grinch
WHO	Question starter
WHO	One of the five W's
WHO	"... knew?"

WHO	First of journalism's five W's
WHO	Grinch victim
WHO	"Tommy" group, with "The"
WHO	Owl's question?
WHO	Reporter's query
WHO	Word before or after "says"
WHO	"Says ..?"
WHO	Personal question?

WHO	Player "on first," in a routine
WHO	"Never heard of him"
WHO	Routine first baseman
WHO	Stephen King's "The Girl .. Loved Tom Gordon"
WHO	Comedy first baseman