Lambda the Ultimate

The SRFI 40 document (now in "final" status) includes a very nice discussion of streams, especially as regards implementing them in strict languages (i.e, "even" vs. "odd" streams).

The code is in Scheme, of course, this being an SRFI, but basic knowledge of Scheme should be enough in order to read the highly readable SRFI document. Do check it out if you are interested in streams.