Which living American actor has over 700 different productions to his name and counting?

To date, Roberts has made appearances in over 700 different productions, making him the third-most prolific screen actor of all time.

Most acting credits (2016 data)
The actor with the most credit mentions is Mel Blanc, with 1069. He was a voice actor who worked on numerous TV shows, such as ”The Flintstones”, ”The Bugs Bunny Show”, and ”Who Framed Roger Rabbit”. He was nicknamed ”The Man of a Thousand Voices”.

The actor with the second most credit mentions is Brahmanandam Kanneganti, a South Indian comedian and actor. He currently holds the Guinness World Record for the most screen credits for a living actor.