Complex sentence: He made his acting debut as a teen in 1995's "The Near Room" and continued to make mostly television appearances until 2003, when his feature film career began and he continued to work in both areas from then on.
Split into simpler sentences: He made his acting debut as a teen in "The Near Room" (1995) and continued to make mostly television appearances until 2003, when his feature film career began. He continued to work in both areas from then on.