Guys, guys, it's:
1. Revenge
2. Secret
3. Tales
4. That bit where you meet Herman Toothrot in The Cave
5. Curse
6. Raz saying 'it opens up into a system of catacombs' when looking at a tree stump in Psychonauts
7. Sid Meier's Pirates
8. Escape.
I replayed the series not too long ago, and Escape has actually gone up a bit for me (still not enough to beat any of the others though). There are definitely weak parts (Elaine, the odd Herman stuff, a lot of the comedy/story stuff falling flat), but there are some good puzzles, some genuinely funny bits, and it does feel like a giant adventure in a large world I enjoy being a part of. Of course, due to the technology involved and some iffy art style choices, it's easily the ugliest Monkey Island game.
And while I still love Curse and think it's super charming, I did feel the pacing and a lot of the comedy wasn't as good as I remember. It honestly bored me a bit at times - something the first two games never do, even though I know every single pixel of those games by heart. There's a lot of memorable fun stuff, but it's not the timeless classic some of the other Lucas games are for me. I do have a lot of fond memories playing through that game with my brothers/classmates though, so I'll never actually dislike it.