- Father is Irish-American and mother is British.
- Lived with his aunt and uncle in Cameroon when he was 17.
- Played with the band Shadyside for five years before becoming an actor.
- Played Elvis Presley in the West End production of Million Dollar Quartet in 2011.
- Nadine Lewington — Wife
- Daniel Malarkey — Brother
- Kevin Malarkey — Brother
- Jim Malarkey — Father
- Nadia Malarkey — Mother
- London Academy of Music and Dramtic Arts, London, England
Ranking Big Bang Theory's Guest Stars
From Stan Lee to Leonard Nimoy, check out the greatest cameos on the CBS sitcom
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