John & Clay: you both asked about sources for routines.
Michael Ammar's book 'The Complete Cups and Balls' is a good starting point. Although the book went out of print a year or so ago, it's still pretty easy to pick up a secondhand copy. The book starts off with basic moves (and routine) and then moves on to the more advanced. It's got a good annotated bibliography so that you can chase other sources that interest you. The book is complemented by a DVD set (sold seperately) which is also excellent - very comprehensive.
For just a few dollars, there's also a great little booklet produced by FUN Inc, called simply 'The Cups & Balls'. It's edited by Gabe Fajuri and contains a nice intro by Bob Read, who was had one of the greatest cups & balls routines ever. As I said, it's a great little book that contains plenty of sleights and a couple of routines too.
I wouldn't advocate using DVDs alone to learn - books are much better, but there are some noteworthy DVDs out there that will complement the books. Two DVDs well worth considering are the Stevens Magic Cups & Balls 'Teach-In' DVD (it features some of the real greats: Johnny Paul, Charlie Miller and Mike Rogers). The other is vol 4 of the Johnny Thompson 'Commercial Classics of Magic' DVDs. Not only do you get to see one of the best routines ever, but Johnny's insights into the history and past masters is fantastic. More than anything, these DVDs illustrate the importance of being entertaining and developing your own unique routine and style.
Oh - and don't forget to check-out Bill Palmer's incredible collection of cups at www.cupsandballsmuseum.com
Good luck - and have fun!