I did the Pegasus Bridge visit several years ago and was very touched by the sheer history of the place. I think the memorial garden with individual monuments to mark the landing spots is very well done. Also had a fascinating chat to the lady that ran the cafe (the first building in France to be liberated) - she was just a small girl at the time of the battle but could recall it with absolute clarity and in perfect English. Highly recommended.
For those with an interest in Bastogne, I cannot recommend 'Band of Brothers' too highly - in my opinion the best series ever about the war. My Dad was there in the Ardennes fighting alongside the Americans and he says that they got the weather and all the events absolutely right.
As for the flying, my vote has to go with 617.