Complex sentence: Thompson is known for his uncanny celebrity impressions, including Robert De Niro, Morgan Freeman, and, most notably, Arnold Schwarzenegger (aka. "Fake Arnold"), and original character voices for video games, film and television.
Split into simpler sentences: Thompson is known for his uncanny celebrity impressions, including Robert De Niro, Arnold Schwarzenegger, and, most notably, Morgan Freeman. In addition, Josh also voices a number of original character voices for video games, film and television.