Mad Monster Party? (1967) Dr. Frankenstein assembles the world's finest fiends to announce his retirement. Pure animated gold for any monster kid. TIL: Pope Benedict XVI's retirement package was pretty decent, consisting of free housing, healthcare and about $3,300 per month.
And lest we forget, we may have lost the legendary Sean Connery, but thanks to him we will always have ZARDOZ, the most F'ed up pro-natural law movie made. My review from the archives.