I'm a member of the Canadian Warplane Heritage Museum. One of the cool benefits of being a member is the membership flight in a vintage aircraft. This weekend I went on a 1/2 hour flight on a Beech E18S Expeditor. I really enjoyed the intimate nature of this small transport plane. I listened as pilots worked their way through the checklist and watched them hand-pump the fuel into the engines for startup.
I am trying to volunteer in the museum archives, but lately it seems my wife is volunteering there more that I am.
If you live within driving distance, you should check the museum out. It owns and operates one of the last two flying Avro Lancasters (the other is in England, owned by the RAF). From what I understand, it is the only one where you can go up on a flight.