In addition to the links, I'll offer this:
Around $400 might seem like a lot for 20 minutes in a B-17, but it's worth every penny if you have any interest at all in such aircraft. I've been obsessed with those bombers since I was a kid, and I just had to do it, cost be damned!!
http://www.youtube.com/watch?v=zbQowHtx_mM&feature=channel_page
I had a ride aboard the EAA's Fort, and it was awesome! I wound up in the rear-facing jump seat behind the copilot because I got aboard first (remember that), and was given the go-ahead to unstrap and move about just after the gear came up. You can visit every position, in flight, except the tail gun. You can stand on the flight deck behind the pilots, and if the radio op's hatch is off, you can stick your head out into the slipstream.
Another tip: if the other pax in your group are too old or out of shape to want to move around much, you'll have a lot more time to yourself in the key areas. So fall in with some fat old-timers.
That's also another way to maybe meet someone who served aboard a B-17, or something similar... or guys like the WWII Army vet I met who told me about going home after VE Day in a C-47. "Living history", indeed...
Aside from the sheer fun of it, the most memorable impression was a new understanding of how vulnerable those crews were on all those daylight runs... even though the Forts were legendary for their toughness, when you're sitting in the nose blister imagining a carpet of flak all around and enemy fighters coming at you, it bumps the "Respect-o-Meter" up considerably. Those kids who flew those missions had guts, and those who survived the war had great skill as well as luck.
As for the EAA's Ford: the ride in back is fun, but for about twice the cost you can get some right-seater time and maybe some time at the controls. A shorter flight, but also worth every penny.
