Happy St. Patty's Day: Who's Irish?

Lots of celebrities are likely to be celebrating St. Patrick’s Day tonight—but you might be surprised to discover which of them actually have Irish roots. The Daily Beast lists 8 you might not expect:

Barack Obama: Yes, it’s Obama, not O’Bama. Nevertheless, the president has an Irish great-great-great-grandfather.

Christina Aguilera: She’s known more for her Ecuadorian roots and Latin rhythms, but her mom is Irish.

Harrison Ford: As Adam Sandler noted in “The Chanukah Song,” he is part Jewish—and half Irish.

Alicia Keys: She’s black, Italian, Scottish, and a teensy bit Irish.

Ben Stiller: Known as—as Time magazine once put it—a “big Jew,” he’s actually half Irish.

John Travolta: He always seems to play Italian guys—and his dad is Italian—but his mom was Irish and he grew up with Irish traditions.

John Stamos: He played a Greek on Full House and he really is half Greek, but Uncle Jesse's character was almost named Adam Cochran—and his mom is Irish.

Janeane Garofalo: The half-Irish comedian got in touch with her roots in 1997’s The Matchmaker, set in Ireland.