He's New York based Actor, Matt Walton. http://www.matt-walton.com
As of my knowledge, there is not a specific spokesperson for Cablevision commercials. Cablevision, which is a subsidiary of Altice USA, may use different actors or celebrities in their commercials at different times.
The former newsman in the Cablevision conversion commercials is Tom Bodett.
Matt Walton is the Cablevision TV Spokesperson. An actor who can be found on Wikipedia.
As of September 2010, Tim Allen is the spokesperson for the Chevy commercials.
Sam Elliot
Jose Canseco
Jennifer leigh
Jan Brehm
Megan Gunning
Ewell gibbons
Alan Sader often serves as a spokesperson in ChildFund commercials.
30 years.
He did do commercials for Ritz Crackers in the 1970's.