<P> Pacino refuses to do the Dunkin' Donuts commercial unless Jack gets him a date with Jill; to that end, Jack invites Jill on the cruise with his family . At sea, while Jill continues making a fool of herself and everyone around her, Jack disguises himself as his own sister and goes on her date with Pacino . Jill suspects that Jack invited her on the cruise just so Pacino would do the commercial; such is confirmed when she phones Jack, he answers as Jill, and then she hears Pacino in the background . Pacino, still believing Jack to be Jill, spells out that he (Pacino) sees much more in her than just a pathetic half - wit...which is what Jack always took her for . Feeling unspeakably guilty, Jack returns to the ship, only to learn that Jill has gone back home to The Bronx . At a restaurant on New Year's Eve, toting a picture of her and Jack's late mother, Jill comes across a group of former classmates who always made fun of her; these classmates, led by Monica (David Spade), pick up directly where they left off...until Jack, his wife and their kids show up . Jack and Jill converse in their made - up twin language (which even Jack finds incomprehensible). Monica attacks Erin and is cold cocked by Jill . Pacino also turns up at the party, dressed as the Man of La Mancha, and tells Jill that while he may have feelings for her, there is another man more worthy of her than himself . She then goes home, where Felipe (the other suitor Pacino was referring to) and his children await her arrival . Felipe professes his love for Jill, and the two begin a relationship . </P> <P> The television commercial is made, with Pacino starring and singing as he promotes a new coffee--"Dunkaccino" from Dunkin' Donuts--with a rap song . But when Jack shows it to him, Pacino hates it and tells him to destroy every copy of the commercial . </P> <Ul> <Li> Adam Sandler as Jack and Jill Sadelstein </Li> <Li> Katie Holmes as Erin Sadelstein </Li> <Li> Al Pacino as Himself </Li> <Li> Eugenio Derbez as Felipe / Felipe's grandmother </Li> <Li> Tim Meadows as Ted </Li> <Li> Nick Swardson as Todd </Li> <Li> Allen Covert as Otto </Li> <Li> Rohan Chand as Gary Sadelstein </Li> <Li> Geoff Pierson as Carter Simmons </Li> <Li> Valerie Mahaffey as Bitsy Simmons </Li> <Li> Gad Elmaleh as Xavier </Li> <Li> Gary Valentine as Dallas </Li> <Li> Kristin Davis as Delilah </Li> </Ul> <Li> Adam Sandler as Jack and Jill Sadelstein </Li>

Who plays the mexican grandma in jack and jill