It's hard to pick ten,i think we all agree on that as stated in the "other" forum.
Most of them are special in one way or another and the stories that go along with them changed they way we look at some them and it just enhances the set,people that don't follow the forums really miss out on that aspect.
The details in alot if them really capture the feel and look of the late 70's and if my OS binder wasn't stuffed full this series may have gone right in behind the 16th puzzle to carry on the tradition!