[2] In 2007, Cassidy played Cliff Wiatt in The CW television program, Hidden Palms.
[2] Cassidy joined the cast of Smallville, a television show based on the DC Comics' superhero Superman, in the series' seventh season, starring as the new editor of the Daily Planet, Grant Gabriel, a love interest of Lois Lane.
He played Charlie Hogan, the best friend of Megan Smith (JoAnna Garcia) in the first fourteen episodes of the television show Privileged.
[4] Cassidy joined the TBS pilot People of Earth opposite Wyatt Cenac.
In August 2006, Cassidy married girlfriend Laura Eichhorn,[6] whom he met in high school.