For us bootleg experts, a fun game would be to identify the live variations of certain parts of songs. For example, JLB's vamping in the climax of To Live Forever... pretty sure i could identify the snippets from "Dance of Eternity" "Live in Tokyo"(DVD) "Lords of Sound," etc.
Also, sections of Killing Hand would be a cool test -- for example comapre the line "A FRIGHTENING STILL!" from Home Sweet Home or Images & Tour 92 (Japan). So memorable...