Well people I grew up in a Baptist church in Miss, so I can totally relate to the following per peeves:
1. service lasting from 11 - 1:30
2. the calling out of folks
3. the "finger" in the air as you leave
4. the 3, 4, 5 collections
5. the funeral home church fans
6. the load bad kids
7. even the communion of stale crackers and Welch's grape juice
or my favorite pet peeve:
CAN SOMEONE TELL THE DIRECTOR OF MUSIC THAT THE MICROPHONES AND SPEAKERS DO NO HAVE TO BE TURNED UP SO LOUD ! 
SISTER JOHNSON SINGS (OR SCREAMS INTO THE MIC) LOUD ENOUGH AS IT IS !!!!
But now I attend a UMC (united methodist church) and let me tell you that some of you guys would not like it, but I love it.
The service only last about an hour and it is not only come as you are (jeans, slacks, dress, what have you) but they also offer different types of services. Plus, they have day care, so that means no more LOUD BEBE KIDS running up and down the aisle!
AMEN!!!
Ok, here is a Sunday at my church
10am - Traditional church service
11am - Praise and Worship
12am - Youth led service
1pm - High energy service (christian rap, soul, etc.)