1. Sex scandals rock the Catholic church. This was the most difficult year for the Irish Catholic Church for as long as anyone can remember. In May, the Ryan Report made headline news across the world when it revealed that rape and sexual molestation were "endemic" in schools and orphanages run by the Irish church over seven decades. Two months earlier, Bishop John Magee was forced to "stand aside" from the management of his Cloyne diocese, in county Cork, after an investigation, published the previous December, found that his diocese had put children at risk by failing to follow child protection guidelines.
Things got considerably worse for the church with the publication, in November, of the Murphy Report into the sexual abuse scandal in the archdiocese of Dublin. Judge Yvonne Murphy chronicled an organised cover-up of child abuse allegations in the diocese spanning a period of nearly four decades. In the wake of the report's publication, there were unprecedented calls for the Pope's diplomatic representative, the Papal Nuncio, to be expelled from Ireland, after it emerged that he failed to correspond directly with the Commission of Investigation. Four bishops named in the report resigned, many said belatedly. A fifth bishop, Martin Drennan of Galway, has so far resisted the growing clamour for him to also step down.
The archbishops of Armagh and Dublin visited Pope Benedict, who expressed his sense of shame and outrage at what was exposed in the report, and Ireland was promised an historic pastoral letter from the pontiff setting out in detail how the church proposed to deal with the crisis. At the end of the year, commentators were predicting the greatest organisational shake-up of the Irish Catholic church for centuries. (Pictured: Dublin Archbishop Diarmuid Martin with Auxiliary Bishop of Dublin Eamonn Walsh, who resigned following publication of the child abuse report.)
2. Barack Obama reaches out to the Islamic world. In a major speech at Cairo University, the recently-inaugurated US president pledged a new beginning in his country's relationship with Muslims. The Nobel Peace Prize committee later identified the Cairo speech as one of the reasons why they had named Obama as their 2009 laureate.
3. Pope welcomes Anglicans into the fold - and a holocaust-denying bishop. When Pope Benedict generously created a new structure to welcome some disenchanted Anglicans into the Roman Catholic Church, while permitting them to maintain much of their distinctive identity and liturgy, the move was seen by critics as an attempted annexation of Anglicanism.
The Vatican's attempt to reach out to ultra-conservative Catholics also backfired when the Pope inadvertently lifted the excommunication of a Holocaust-denying bishop (pictured, left).
Bishop Richard Williamson's views were widely available on the World Wide Web, but Vatican officials had failed to notice.
The Pope was forced to admit that the bishop's rehabilitation had been badly handled, ordered him to recant, and said church officials would in future make greater use of the internet to avoid controversial decisions.
4. Anglicanism's first lesbian bishop. The Archbishop of Canterbury begged them not to do it. But America's Episcopal Church drove a bus through the Anglican Communion's moratorium on the appointment of gay bishops with the election of the Reverend Canon Mary Glasspool as a suffragan bishop in the diocese of Los Angeles.
5. Megachurch in megatrouble. One of Northern Ireland's largest and best-known churches, the Metropolitan Tabernacle, was plunged into disarray when George McKim, the man named as the successor to Senior Pastor James McConnell (pictured), launched a breakaway church after a dispute about his succession. To date, hundreds of former Whitewellers have left to join the new Peoples Church, Newtownabbey, which now meets in a warehouse in Mallusk.
6. Presbyterian frustration. The Presbyterian Moderator, Dr Stafford Carson, expressed immense frustration at the government's failure to resolve the crisis facing the Presbyterian Mutual Society, a year after the society went into administration. In December, it emerged that talks with a bank interested in taking over the society are now "at an advanced stage". Presbyterian savers now hope for some good news in the new year.
7. Atheism on the buses. Ads reading "There's probably no God" appeared on buses across the country after the Athiest Bus Campaign raised more then £140,000 to counter Christian advertisements on London buses. Christian campaigners complained, unsuccessfully, to the Advertising Standards Authority, and Ron Heather, a Christian bus driver in Southampton, refused to drive any bus bearing the ads.
8. A red letter year. Evangelical Christians commemorated both the Great Revival of 1859, one of the pivotal events in Irish religious Ireland, and the 500th anniversary of the birth of John Calvin (pictured), the founder of Presbyterianism. 1859 was also the year Charles Darwin published The Origin of Species, which unleashed one of the great controversies of recent religious and cultural history: the battle between creationism and evolutionary accounts of human origins.
9. Creationist capital. While Darwin's anniversary was being marked by science campaigners across the world, research commissioned by the religious thinktank Theos revealed that 25 per cent of the adult population of Northern Ireland believe in some version of creationism, making us the creationist capital of the UK.
10. Prayers for pastors. The year ended with outpourings of prayer for the Bible teacher and writer Derick Bingham, in treatment after a leukaemia diagnosis, and the former Catholic primate Cardinal Cahal Daly, who remains critically ill in hospital.
Derick Bingham's published letters from his hospital bed, and his interview on BBC Radio Ulster about his fight with cancer, were widely regarded as inspiring and deeply moving.
92 year-old Cardinal Daly's serious illness prompted tributes from many church and political leaders, who recalled his strong commitment to Christian unity and his peace advocacy during some of the darkest days of the Troubles.
The former Church of Ireland Primate, Lord Eames said, "The prayers of a great many people are with him at this time".
Update (8pm): The Catholic Church in Ireland announced tonight that Cardinal Cahal Daly has died. Read the BBC's obituary here.