Today is one of my favourite feasts: Pentecost, also known as Whitsunday (from the Old English wytte, or wisdom, meaning the wisdom of the Holy Spirit poured out on us - also sometimes interpretted as witte, or white, for the white robes of the catchumens seeking baptism). Our parish makes a big deal of Pentecost, and it's often one when we do combined activities with our sister Catholic parish. This year we did a pulpit exchange, with their priest preaching at our parish and one of our priests preaching over there.
I was also thinking about Trinity Sunday next week. This always seems a really natural progression: from creation, incarnation, redemption, indwelling - Christmas, Lent, Easter, Pentecost, Trinity. The Church Fathers knew what they were doing!