There are four sports Irish people follow: Football (soccer), Gaelic football, rugby, and hurling (the fastest field sport). They take it very seriously, and the stadium in Dublin is appropriately large. All four are quite a site to see, and barring soccer, are quite dangerous to partake in.
Equipment: Ha! No gear!
Watching sport in pubs is great in Dublin especially during the GAA final! premiership all year long, ryder cup now (golf)...I use this website for the sports schedule in dublin bars : www.sports-in-bars.ie
Dublin is a city for watching sports !