Of all things related to Monty Python, this is my least favorite. I don't know, am I the only person who thought this movie kind of sucked? The story is ungodly hard to follow, with several points that really just didn't add up at all (the scene with the aliens was so strange it was cringeworthy). I mean, The Meaning of Life was allowed to be incomprehensible, because it's a sketch comedy; but LOB is a film with story, so it just feels out of place. And aside from a few mildly amusing jokes, the humor is very mediocre, some of which is just rehashed from Holy Grail. I guess I do sort of respect the movie for attempting to make fun of religion in a way that a lot of other people wouldn't risk doing, but they just didn't do it the right way at all.
On the upside, the actors do a fine job as usual, and the sets and costumes were very well-constructed. But even that's not saying much. The only part of the film that I thought was really good was the part at the end when (SPOILERS!) Brian and some other guys are being crucified, and to cheer themselves up, they all sing "Always Look on the Bright Side of Life". I thought that was a very touching moment, because it captured the idea of life and death in a realistic way (it should have been in The Meaning of Life). But aside from that, the film really falls flat, with lame jokes, a muddled story, and nowhere NEAR enough sex for an R rated film. Go watch the other two movies.