We couldn't leave Ireland without another trip to Inishmore, the largest of the three Aran Islands. Last fall, we didn't get to see half the island because we decided to walk versus rent bikes or take a guided tour by van. Inishmore was our first adventure last September not long after we arrived in Galway.
In July, we spent a full Saturday on the island, riding bikes to all the top sights. The sun shined down on us all day -- it was brilliant! This is such a great way to see the island; we highly recommend it. I also recommend stopping off Joe Watty's pub about 10 minutes from town to listen to local music, if the weather is good. Joe Mac's Pub next to the hostel and SuperMac's in Kilronan, right near the docks where all the ferries land, is also a great place for socializing.
You can find a list of all the top attractions here.