Toy Block Tower, because it felt like the most impressive level in the passage and the one with the least annoying game mechanic. Domino Row was okay, The Big Board becomes hell on harder difficulty levels (enjoy replaying the level every time you mess up a single dice block or section!) and I don't remember much about Doodle Woods.
I'll give them some credit here though, these levels often looked extremely good, even by this game's high standards.