The title music "Ecce homo" ("Behold the man"), like many TV themes by Howard Goodall, was originally written as a serious piece of church choral music. New lyrics (in Latin) were written for "Mr. Bean": "Ecce homo qui est faba. Vale homo qui est faba" ("Behold the man who is a bean. Farewell the man who is a bean").
In the first episode during the church sketch, the unseen preacher is the voice of Rowan Atkinson. He is speaking nonsensical gibberish in his natural voice.
The original proposed name for the character was Mr. White. Names of vegetables were next, including Mr. Cauliflower, ending with the choice of Mr. Bean.
Mr. Bean's flat completely changes between episodes. For example, in "The Trouble with Mr. Bean", his bed is in the living room. In "Do It Yourself Mr. Bean", he has a separate bedroom.
The classic car park sequence was filmed at the Heathrow Airport Bowl car park. Mr Bean then walks out of the car park into the swimming baths, which are actually six miles away.
In "The Return of Mr. Bean" it is alluded that his first name is actually "Mr.", as when he writes his birthday card at the restaurant, he writes "Mr." on the front of the envelope.
the word "PHUT" appears on the wall next to the busker playing the saxophone. in the episode The Return of Mr. Bean (#1.2), "PHut" is also the name of the club he meets his date at in the episode Mr. Bean Goes to Town (#1.4).