The following people are credited as replacements or additions if they were not credited on opening night.

Directed by Frank Galati (Was replaced in previews).

Associate Co. Mgr: Thomas Schlenk.

Stage Manager: Kenneth McGee.

Aaron Carter	JoJo	(Mar 30, 2001-May 13, 2001)
Michael J. Farina	Grandpa Who	(Feb 2001-May 20, 2001)
Rosie O'Donnell During David Shiner's vacation	The Cat in the Hat	(Jan 16, 2001-Feb 10, 2001)
Cathy Rigby	The Cat in the Hat	(Mar 15, 2001-May 20, 2001)

Understudy: Michael J. Farina (Horton the Elephant).