Heatwave is a Series 1 episode of The Mr. Men Show.
- Miss Calamity's Plot: Miss Calamity's fan breaks off the ceiling and develops a killing mind of its own! Miss Calamity tries to get away from it. She calls the Dillydale Ceiling Fan Company, but it is no use. It soon sends her house off the cliff, even breaking her gnome.
- Mr. Persnickety's Plot: Mr. Persnickety's radiator breaks down on the way to the beach and he is with Mr. Messy who makes a big mess.
- Mr. Nervous' plot (ONLY IN THE US VERSION): Mr. Nervous imagines that he landed an air craft on the planet mercury closest to the sun then a robot comes out shooting lasers at him. In reality he is being sprayed by Miss Scary's hose.
- Mr. Rude's Plot: Everyone in Dillydale knows that Mr. Rude has an air conditioner (it was Miss Scary who spread that rumor) and everyone barges into his house.
- Goof: The ending of the episode doesn't audicate properly in the UK version.
- The first time a Mr. Man sweats (besides the 1989-98 cartoon).
- The show that Mr. Small watches in Mr. Rude's plot is an actual episode from The Mr. Men Show - Fair.
- Goof: How did Miss Scary actually hear Mister Noisy tell Mister Strong about Mister Rude's air con?