and "d'oh" became a part of the cultural zeitgeist because Dan Castellaneta had the creative freedom to explore Homer Simpson as he saw fit at the time, resulting in "d'oh" becoming his signature ...

The Simpsons has been on screens for 36 years (and has many seasons) with Dan Castellaneta and Julie ... is perhaps best known for turning his signature ‘d’oh’ into ‘t’oh’ after ...