The actor in the Comcast Xfinity X1 “Impressions” commercial is:
Jimmy Fallon IMDB
Jimmy Fallon is a television and movie actor who has appeared movies such as Taxi and Fever Pitch and was a cast member of Saturday Night Live (commonly referred to as SNL). Jimmy had been hosting Late Night with Jimmy Fallon since 2009 and took over as host of The Tonight Show in February 2014. Fallon is seen in this Comcast Xfinity X1 Platform commercial performing many impressions to illustrate the X1’s ability to recognize voices of all kinds.