<P> Meanwhile, Larry is revealed to be an unemployed slob with dentures, and is in financial debt, though claiming that he is a successful businessman in the hopes of marrying Joan for her money . Larry sees Nevins running across the street and tracks down Joan to tell her, but Things 1 and 2 have stalled her on the road, posing as police officers . Larry goes back to the house, telling Joan to meet him there . </P> <P> By the time the kids and the Cat (and Larry) return to the house with the lock, a huge mess spills from the unlocked crate and enters the house, seemingly killing Larry in the process . They navigate their way through the oversized house and find the crate while cleaning up . The house is returned to its normal proportions but then immediately falls apart . The Cat confesses to the kids that he planned the whole day, including making not opening the crate his one rule as he knew Conrad could not resist . The kids angrily tell the Cat to leave the house . Conrad prepares to face the consequences when Joan comes home but Sally says she will share the blame . The Cat having overheard this happily returns to clean up the mess with a great cleaning contraption . named D.I.R.T. (Dynamic Industrial Renovating Tractormajigger) Afterwards, The Cat says goodbye and departs as Joan is arriving . Larry returns, revealing he survived when all was restored, thinking he has busted the kids, but when Joan sees the clean house (and a messy Larry), she does not believe Larry and dumps him . After the successful party, Joan spends quality time with her children and the film ends as the Cat and his Things walk off into the sunset . </P> <Ul> <Li> Mike Myers as the Cat in the Hat, a tall, anthropomorphic, wise - cracking cat with a Brooklyn accent who wears a special hat which reveals many magical abilities . </Li> <Li> Spencer Breslin as Conrad Walden, Joan's destructive and misbehaved son . </Li> <Li> Dakota Fanning as Sally Walden, Joan's dull, well - behaved, and rule - obeying daughter . </Li> <Li> Kelly Preston as Joan Walden, Conrad and Sally's mother, and a workaholic real - estate agent . </Li> <Li> Alec Baldwin as Lawrence "Larry" Quinn, the Waldens' pompous, lazy, unemployed next - door neighbor . He is revealed to be allergic to cats, steals food from the Waldens and gets away with it, and is determined to both marry Joan for her wealth and send Conrad to military school to straighten up his behavior . </Li> <Li> Amy Hill as Mrs. Kwan, an elderly Taiwanese woman who gets hired to watch the kids, though she sleeps through her job . Her weight and sleep serves as a running gag . She sits down on the couch to watch brawling in Taiwanese parliament . </Li> <Li> Sean Hayes as Mr. Hank Humberfloob, Joan's boss . Hayes is also the voice of the family fish . </Li> <Li> Danielle Chuchran and Taylor Rice as Thing 1, and Brittany Oaks and Talia - Lynn Prairie as Thing 2; two gibbering trouble - making creatures that the Cat brings in with him . Dan Castellaneta provided the voices for both Things . </Li> <Li> Steven Anthony Lawrence as Dumb Schweitzer . He whacks Cat in the testicles with a wooden baseball bat </Li> <Li> Paris Hilton as a female club - goer </Li> <Li> Bugsy as Nevins, the Waldens' pet dog . Frank Welker provided his voice . </Li> <Li> Candace Dean Brown as a secretary who works for the Humberfloob Real Estate . </Li> <Li> Daran Norris as the Astounding Products Announcer </Li> <Li> Clint Howard as Kate the Caterer </Li> <Li> Paige Hurd as Denise, who does not speak to Sally anymore, not long after she talked back to her . She never invited Sally to her birthday party either since Sally earlier stated that she told Denise not to speak to her anymore . </Li> <Li> Stephen Hibbert as Jim McFinnigan </Li> <Li> Roger Morrisey as Mr. Vompatatat </Li> <Li> Victor Brandt as the Narrator, who tells the story; he is revealed to be the Cat using a voice - changer at the end . </Li> </Ul> <Li> Mike Myers as the Cat in the Hat, a tall, anthropomorphic, wise - cracking cat with a Brooklyn accent who wears a special hat which reveals many magical abilities . </Li>

Actors who played thing 1 and thing 2