Over 10 years ago our parish decided to emphasize the need for a Commitment to Parish Life, or CPL. I have discovered that folks who like and appreciate something is eager to get involved.
I believe one of the best Eucharistic celebrations offered by the church is the Easter Vigil. It is at least 3 hours at our parish. It includes the stories from the Old Testament about God's faithfulness, even when the people were not so faithful to the covenant.