Thanks darth and dhuey, I will definitely do the Upper and Lower Yosemite Falls, I think that's a good midweek one to start at the crack of dawn. Probably the same with Vernal and Nevada Falls too.
I've started reading through the two guidebooks I have. The hike to the top of Mt Dana also looks interesting. I think in between I might rent a raft on the Merced to chill out.