What Are You're 3 Favourite Levels, Missions Within Them, And Why?

What are you're top three favourite levels. What are you're top three missions within them? Why?

Personally...

FAVOURITE LEVELS

3. Level 3 - Fun missions, and the story starts to pick up speed.
2. Level 5 - Fun missions, great map and hidden collectibles, and the main story unravels at the end.
1. Level 6 - While most of it can be considered filler, the missions are fun and climactic, collector cards become more puzzle-oriented to collect, and probably feels the best to complete on a first playthrough.

FAVOURITE MISSIONS WITHIN MY FAVOURITE LEVELS
Level 3:

3. Nerd Race Queen - The return of the nerd! This mission showcases how the difficulty HAS risen since level 2.
2. Slithery Sleuthing - Teaches the "follow and collect" type mission. The dialogue is funny, and the mission is easier then the mission proceeding it.
1. The Old Pirate And The Sea - On my first playthrough, despite the constant number of times I failed, I proceeded as I was desperate to find out what had happened to Bart.. only to be greeted with the confusing "Board the C-Spanker" task.

Level 5:

3. Kwik Cash - Nice music, difficult mission. 2. Curious Curator - The feeling that you're close to unravelling the plot, and the great music that perfectly fits destroying the Curator's car.
1. This Little Piggy - I'm not even sure why love this mission. I just do.

Level 6

3. Getting Down With The Clown - A very confusing mission (because it's briefing screen not matching the actual mission at all) but a fun one, with a race that can catch you off guard.
2. Kang and Kodos Strike Back - Probably one of the most climactic missions in the game and it's just a fun, short race.
1. Lab Coat Caper - Why? I have no clue. The music fits well, though.