One of the new issues that I am beginning to see in undergraduate project work is uncertainty regarding how to cite various atypical sources. In my day [gets out pipe and smoking jacket], the most tricky source was a book section or occasional website. Now, though, it seems that podcasts and Youtube videos etc. are being added to list of legitimate and useful sources of information and opinion. Fortunately, help is at hand. The library staff at Anglia Ruskin University have made a really useful Harvard System of Referencing Guide  containing all manner of source types and the required information for citations thereof. This is the best website of this kind I have seen and well worth bookmarking if you have to deal with this stuff regularly.
1. Anglia Ruskin University, 2011. Harvard System of Referencing Guide. [online] Available at: <http://libweb.anglia.ac.uk/referencing/harvard.htm> [Accessed 14 January 2012].