Bad Roomies

The Beauty Inside

Last Man Standing

Greek

How I Met Your Mother

The 40 Year Old Virgin

Pancho's Pizza

Listen Up!

Without a Trace

CSI: Miami

George Lopez

Malcolm in the Middle

That '70s Show

7th Heaven

Jordan Masterson (born April 9, 1986) is an American actor. He played Zeb, a five-year-old boy, in Danielle Steel's 1993 TV adaptation Star. He may be best known for his role as Mark in the 2005 film The 40-Year-Old Virgin and his recurring role as Dumptruck in ABC Family comedy-drama series Greek.  He co-starred as Ryan Vogelson in Last Man Standing on ABC (2012–2017) and FOX (2018–2021).
He also guest starred in the television series Grounded for Life, George Lopez, Las Vegas, 7th Heaven, CSI: Miami, Without a Trace and How I Met Your Mother.
Masterson is the brother of actress Alanna Masterson and the maternal half-brother of actors Danny Masterson and Christopher Masterson. His cousin is Angus T. Jones.