It's hard to rate my games by "fun" as the newest usually gets that slot.
Safecracker is currently the top new game, having a blast learning the rules and navigating the board game which is rather fun when you couple the pin action with it.
but my ranking in order of the last I would get rid of (#1) is as follows:
1) The Addams Family
2) Funhouse
3) Indiana Jones
4) Wizard of Oz
5) Safecracker
6) Whirlwind
7) Medieval Madness
8) Slugfest