On slide 37 it mentions EICAR, which I think is a very cool program. It's an all-ASCII executable, and it's used as a test file for antivirus programs.
http://thestarman.pcministry.com/asm/eicar/eicarcom.html Just put this in a file and your AV should detect it:
X5O!P%@AP[4\PZX54(P^)7CC)7}$EICAR-STANDARD-ANTIVIRUS-TEST-FILE!$H+H*
