He has also starred in commercials for brands such as Pepsi, Got Milk? and Taco Bell. He also has appeared on Justified, Open Water 2, and Jericho. In the HBO mini-series Band of Brothers, he played Sergeant Warren 'Skip' Muck. He also directed mutiple episodes of Supernatural.
Richard is a regular at Supernatural conventions, alongside actors Matt Cohen and Rob Benedict. He and Rob Benedict are also co-writers of the series King of Con (which was canceled after one season).
- Season 2
- Season 3
- Season 5
- Season 9
- Season 13
- Season 11
- Season 12
- Season 13
- Season 14
- Season 15
- Rob Benedict, Matt Cohen and Richard are known collectively as R2M.
- Richard saved Rob when the latter suffered a stroke during a convention in October 2013. Richard rushed Rob to the hospital where the doctors informed them that had they been a few hours later, Rob would have died.
- Richard has known actor Timothy Omundson for more than 30 years.
- Richard once got Mark Pellegrino drunk before a convention which led to rather sultry dancing. Richard soon regretted this decision.
- Richard said at a convention that he was forced to stand on boxes during scenes with Jared Padalecki and Jensen Ackles because they are much taller than him.