OK, frankly I don't know if you can rate how boring church masses are, but I've heard sometimes in documentaries that only Catholics have Marian visions because their mass is so dreadfully boring, that they are so desperate to bring any new even remotely invigorating, that they pilgrim to their neighbor's bathroom's door because they see in it's tree-rings so called virgin Mary.
Other thing I remember is from documentary "Jesus Camp" where that evangelical little girl explains (this is from transcript): God is not in every church, there is such a thing there… it has certain church… they call: "dead churches"… and people there, they sit there like this:
We worship you, God,
we worship you, God.
They sing like 3 songs and they listen to a sermon.

My guess is she was talking about Catholics, am I right? Then she continues: Churches are God likes to go to… Our churches are  jumping up and down, shouting His name…

It seems that other Christian denominations even feel kind of sorry for Catholics because they have boring mass. So which one is most boring? And compared to other religion's masses like Krishnas, Muslims, Satanists... I guess Satanists have most fun.

Yeah, I always saw Catholic mass as really boring from an outside perspective. I will give them some credit for that, though. At least by doing that they stick to their doctrine (even if there is much back-tracking lately). The typical Christian service I used to go to was just "feel-good Jesus time" with the intention of manipulating people through emotion. I can't respect that at all.

I always admired the slick way they get to confess their sins and after a modicum of penance walk away free of guilt and regret.

I wouldn't be surprised to find out it isn't just boring but designed to break down the mind into a state of grim acceptance. You know, like adverts do.

I've attended catholic Mass in an old Benedictine monastery not too long ago, and the monks singing and all the mystique and architecture made it interesting in a Name of the Rose kind of way. But standard Mass is boring.

I finally quit going to Catholic mass as a young teen. Very boring and authoritarian. Sit,  kneel , stand. Then my parents switched to Pentecostalism. Way more exciting and way more stupid.

Personally I couldn't spot the difference between Catholic and Anglican services, though I suspect Orthodox services to be right up-there in the boredom stakes.
That said I know Baptist preachers will use pepper if anyone falls asleep whilst more reputable churches will let them rest.

Not the snake handling sect. They know how to get their freak on.

Ehhh....except for the whole communion thing, what I saw of Catholic services reminded me a lot of Jewish services - a lot of standing/sitting or sitting/kneeling and half English half strange ancient language.

I should think an all English service would be more boring. At least with the Latin or Hebrew, I can test my language skills.

Judaism has a neat music tradition. I used to live in Tampa Bay and the local community radio station used to have a show called "Sunday Simcha (sp?)" for two hours and it was all Jewish/Yiddish type music. I just listened to the show for the first time since the early 90's (thanks, web), and I actually quite liked it. They kept using the term "klezmer". Not sure if that applies to all Jewish music or not.

I went to a bar mitzvah of a distant relative back in the '00s in Philadelphia, and went to synagogue, and it was kind of creepy. The chanting, and the movements. 

In Vermont, at my first college, I went with a teacher a few times to a priory. It was a pretty place. Very rustic. But the service was sterile. Even with all the monks in their rustic robes. It just about gave me a stroke. Some neat people, though.