Maltin

4 clues
Leonard with a yearly movie book
Leonard who panned "Leonard Part 6
Entertainment Tonight" film critic
Critic who wrote the shortest review ever given to a motion picture: "No" for 1948's "Isn't It Romantic?
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Aaarating
Aameeting
Aameetings
Abating
Abbienormal
Abbreviating
Abducting
Abetting
Ablastingindisguise
Abnormal
Abnormalcraving
Abnormally
Aborting
Abronxtamale
Absenceofmalice
Absenceofmallets
Abstinence
Abstinent
Abstinentminded
Abtesting