which films did he feature in?
"The Twilight Saga" and "The Bernie Mac Show".
Taylor Lautner
 He is known for playing Jacob Black in "The Twilight Saga" film series based on the novels of the same name by Stephenie Meyer.

who did taylor swift write back to december about Taylor Lautner who is he? An American actor, voice actor, and model.
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Taylor Lautner [SEP] Introduction
He also starred in the 2011 action film "Abduction". From 2014 to 2018, Lautner starred in the BBC sitcom "Cuckoo" as the son of the titular character. In 2016, he played a leading role, Dr. Cassidy Cascade, in the second season of FOX black comedy series "Scream Queens".