Heath Ledger

Heathcliff Andrew "Heath" Ledger (4 April 1979 – 22 January 2008) was an Australian actor and director. After performing roles in several Australian television and film productions during the 1990s, Ledger left for the United States in 1998 to develop his film career. His work comprised nineteen films, including 10 Things I Hate About You (1999), The Patriot (2000), A Knight's Tale (2001), Monster's Ball (2001), Lords of Dogtown (2005), Brokeback Mountain (2005), The Dark Knight (2008) and The Imaginarium of Doctor Parnassus (2009), the latter two being posthumous releases. He also produced and directed music videos and aspired to be a film director. Ledger voiced Isaac Timberwolf and was the most recurring guest star throughout the series.

Death & Retirement
Ledger died on 22 January 2008 from an accidental intoxication from prescription drugs. A few months before his death, Ledger had finished filming his performance as the Joker in The Dark Knight. His death occurred during editing of The Dark Knight and in the midst of filming his last role as Tony in The Imaginarium of Doctor Parnassus. His untimely death cast a shadow over the subsequent promotion of the $185 million Batman production.

Due to Ledger's passing, the character Isaac Timberwolf would retire. In Funeral Expert Interview, the episode is dedicated to Heath Ledger as Isaac Timberwolf.