Trivia: The Latin lyrics used at the beginning are "Ecce homo qui est farba, qui est farba, qui est farba", which mean "Behold the man who is a bean". At the end, it's identical, but "Ecce" is changed to "Vale"; "Farewell, man who is a bean." Before and after the advert break (in the UK version), the lyrics are "Fin de partie primae" and "Pars secunda" - "End of Part One" and "Part Two".
Trivia: The series authors have stated that the opening sequence is not meant to imply that Mr. Bean is an alien; rather, he's a random ordinary guy "thrown into the spotlight". The first UK screenings of the first episodes did not have this opening sequence, but it was added to them when they were repeated and re-released.