Jack Black
Episode: 1x01 | Airdate: Dec 3, 2010
Jack Black proves he's larger than life as he breaks out the guitar for an impromptu jam session.
Season 1
Andy Samberg
Episode: 1x02 | Airdate: Dec 10, 2010
Actor/comedian Andy Samberg shares some family secrets with Phineas and Ferb!
Seth Rogen
Episode: 1x03 | Airdate: Jan 7, 2011
Phineas and Ferb get to know the real Seth Rogen.
Tony Hawk
Episode: 1x04 | Airdate: Jan 21, 2011
Phineas and Ferb spend time with legendary skateboarder Tony Hawk.
Taylor Swift
Episode: 1x05 | Airdate: Feb 18, 2011
Phineas and Ferb rock out with pop sensation Taylor Swift.
Regis Philbin
Episode: 1x06 | Airdate: Feb 25, 2011
Who knew Regis loves hip hop and "Squirrels in my Pants"?
Neil Patrick Harris
Episode: 1x07 | Airdate: Mar 18, 2011
Phineas and Ferb welcome star of stage and screen, Neil Patrick Harris.
Randy Jackson
Episode: 1x08 | Airdate: Mar 25, 2011
Randy tells the boys about what dogs they would be and gives Candace some useful singing tips!
Emma Roberts
Episode: 1x09 | Airdate: Apr 8, 2011
Emma Roberts sat down to chat and even dished out some advice to Isabella on guys!
Cedric the Entertainer
Episode: 1x10 | Airdate: Apr 29, 2011
Cedric comes by and Phineas questions him on his first comedy act.
David Beckham
Episode: 1x11 | Airdate: Jul 23, 2011
Howie Mandel
Episode: 1x12 | Airdate: Jul 30, 2011
Miss Piggy
Episode: 1x13 | Airdate: Aug 20, 2011
Tom Bergeron
Episode: 1x14 | Airdate: Sep 16, 2011
Ty Pennington
Episode: 1x15 | Airdate: Sep 23, 2011
Shaun White
Episode: 1x16 | Airdate: Oct 14, 2011
Larry King
Episode: 1x17 | Airdate: Oct 28, 2011
Jason Segel
Episode: 1x18 | Airdate: Nov 4, 2011
Ben Stiller
Episode: 1x19 | Airdate: Nov 11, 2011
Guy Fieri
Episode: 1x20 | Airdate: Nov 25, 2011