The dacks have it all and some of the biggest runnable drops around! Lots of good suggestions already (Twin falls of the Grasse, Mosse, Independence all classics).
Depending on your style and preference the Oswegatchies (a few sections) are amazing, Racquette (dam release), Johns Brook, Play on the Black and Fish and on and on. Check out the guide book by Dennis Squires if you can get it.
I live on the Ottawa but fire me an email if you are heading down as I'm always up for paddling upstate NY and maybe we could meet up for some boating.
Rapid Media TV Guy