Darn, tough call. I'd say it's a toss up between Zeppelin I and IV.
I know nothing about zeppelins with the exception of the Graf Zeppelin. Zeppelins are lighter than air ships but I would assume if it were made of "Led," it wouldn't get off the ground.
It seems as if i'm out-voted Joe,but i preferred "Led Zeppelin",their first album
Led Zep four I think, but it was years ago (nearly 40) even I was young then.....
All the albums, favorite song, Cashmere. Want a good one. Here in Fl. A politician is running a commercial using Stairway to Heaven. "And he's charging us a Stairway.....to nowhere" Ticks me off, everytime I see it. I won't vote for that idiot, just for abusing the song. Lol