"a ... series that should [I hope] get [more people] into the penguin fold ..."
That metaphor doesn't work, because penguins don't live in folds - that's sheep. Actually, not being domesticated, they don't live in man-made structures at all. I suppose "penguin enclosure", as at the London Zoo, would work. Otherwise, if you're after a collective noun for penguins it's any of:
Register
Penguin Colonies
@Anonymous Coward:
"a ... series that should [I hope] get [more people] into the penguin fold ..."
That metaphor doesn't work, because penguins don't live in folds - that's sheep. Actually, not being domesticated, they don't live in man-made structures at all. I suppose "penguin enclosure", as at the London Zoo, would work. Otherwise, if you're after a collective noun for penguins it's any of:
colony
crèche
huddle
parcel or
rookery
http://www.rinkworks.com/words/collective.shtml