1. Part 3 - This is the first one that really explored the mythology, and the only sequel that actually compliments the original, still looks and feels like it, and lacks the silly pop culture/heavy metal/Americana shite of later entries.
2. Part 1 - What can you say really.
3. New Nightmare - A really interesting take on the series and kick started the whole post-modern horror era a year before Scream made it popular.
4. Part 5 - Undeservedly maligned, a great visual style, and an interesting concept that is a lot more than "Freddy has a baby".
5. Part 4 - Morbid and slightly dull, and the first of the sequels that gave us the whole wisecracking pop culture thing we all remember. And the storyling makes no sense, actually part 5 had a better story.
6. Part 2 - The gayest horror film ever made, and total shit that forgot the mythology established in the first. You can tell it was rushed. And the hero is such a wuss.
7. Part 6 - Roseanne was in it. With Tom Arnold. If that wasn't enough, they retconned the entire storyline and added ten minutes of 3D to the end.
8. Freddy vs Jason and the Remake - Beyond shit in virtually every way.