aahhhhh.
The greatest part of having a 74 year old dad is the major anniversary date things that happened before I was alive, such as the JFK assassination, first moon landing, jfk/nixon, etc. Can't tease him with Pearl Harbor as he was born about a year and a half after that. I think the JFK assassination hurts the most as he was in college when that happened so him being in college when it happened + 56 years ago this November means he's old.
EDIT: 76 this late summer, not 74. Glad I go see him on a daily basis - who knows how much longer I get to hang with him!