Just noted down few events I would love to attend
OpenHouse Dublin – explore your city’s archicehture from the 16th to the 19th of October
Oktoberfest 2008 - A FREE event for all, experience traditional German fun, food and entertainment (9th-19th October)
Eirtaku meet – Eirtaku forum meeting (everything about Japan, Japanese language, animes, manga etc.), tomorrow (18:30 near spire)
Open Coffee - tomorrow, 10:30 in NYG (informal event for web / business people)
Pet Expo 2008 - in RDS 17th – 19th October
Samhain Halloween Parade – Visit Marlay Park in your Halloween costume for an afternoon of Children’s Monster Movies followed by a parade of costumes through the woods and finished off with a fireworks display! (25th October)
Horrorthorn is the Annual Horror Film Festival, which takes place from the 23rd to the 27th of October at the IFI.
The Future Internet – 29th Oct at Digital Hub
Dublinr – Flickr finest Dublin gallery (5th-9th November)
National Women’s Enterprise Day – Mullingar Hotel, Mullingar, all day conference 26th November

Our friends at IrishDev.com are running IJTC:
http://ijtc.firstport.ie/blog/archive/ijtc-2008-its-back/