Complex sentence: Thirlby appears in the 2009 HBO series "Bored To Death" and voices promotional video excerpts from the novel "Thirteen Reasons Why" by Jay Asher which since October 2008 have regularly been posted to YouTube.
Split into simpler sentences: Thirlby appears in the 2009 HBO series "Bored To Death". She voices promotional video excerpts from the novel "Thirteen Reasons Why" by Jay Asher which since October 2008 have regularly been posted to YouTube.