TMDb/The Simpsons TV The Simpsons' poignant Season 37 finale explores bipolar disorder through Kirk Van Houten, delivering one of the show's most emotionally resonant episodes. April 12, 2026 AceShowbiz - The Simpsons has long been celebrated for its sharp humor and iconic moments, from Homer's infamous "d'oh!" to the playful antics between Homer and Bart. While primarily known as a comedic staple, the series has never shied away from exploring emotional and heartfelt themes.