Complex sentence: He originally auditioned for the role of ill-fated Terry Crowley, which ultimately went to Reed Diamondunately for Johnson, series creator Shawn Ryan was so impressed with his audition that the role of Lem was created especially for him.
Split into simpler sentences: He originally auditioned for the role of ill-fated Terry Crowley, which ultimately went to Reed Diamond. Fortunately for Johnson, series creator Shawn Ryan was so impressed with his audition that the role of Lem was created especially for him.