Definately not. You are thinking of the established actor who cut his teeth as the shady O'Reilly on HBO's Oz with real life brother (Good Will Hunting's How you like those apples?). The man apparently singing Most Wonderful has answers of Andy Williams and somebody name Levi. In short no.
No, it is not Paul Rudd. The actor's name is Scott Fowler.
His name is Scott Fowler an accomplished dancer from North Reading MA
The actor in the Jeep commercial featuring singing animals is: Paul Bartholomew
Michael Torpey
John Mocadlo
That guy in the OP Nissian Altima commercial is Chad Donella
The actor is Paul Bartholomew. He's on IMDB.
Aaron Takahashi
Paul McCartney
gene wilder is singing, from willie wonka and the chocolate factory.
Robert Ri'chard from cousin skeeter