OpenSSL Valhalla Rampage is a great, uhm, rampage through the OpenSSL source code, and ripping it apart a bit at a time. From their site:
Tearing apart OpenSSL, one arcane VMS hack at a time.
The awareness recently on OpenSSL has been a great catalyst to look at some of the “but it’s there and it works” for some of the most used Open Source software.