New page, updated list:
BASIC
AS: Basic A.I. by Dancing-Thunder
AS: Clock by Glaiel_Gamer
AS: Conditions and Loops by BleeBlap
AS: Duplicated Movie Clips
AS: For... in loops by Inglor
AS: Movement - Basic
AS: Movement - Scrolling background by DrDeath2k3
AS: Password by Dancing-Thunder
AS: Performance & Optimisation Tips by T-H
AS: Preloader
AS: Quality Toggling
AS: Sound
AS: Symbols by Joelasticot
AS: Variables by Dark_Toaster
INTERMEDIATE
AS: Arrays
AS: Collisions by Glaiel_Gamer
AS: Collision Detection by BleeBlap
AS: Debugging Syntax by Inglor
AS: Functions - Basic by Inglor
AS: Intervals by Inglor
AS: Linear Increasement by Inglor
AS: Load External Data/Cross-Domain
AS: Movement - On slopes by Joelasticot
AS: Platform Game Basics by Atomic_Sponge
AS: Pong physics & gravity by Dark_Toaster
AS: Save and Load
AS: SWF right-click menu
AS: Typewriter Effect by Atomic_Sponge
ADVANCED
AS: API by -liam-
AS: Binary Increasement by Inglor
AS: Checking Stack Syntax by Inglor
AS: Modular Programming by Inglor
AS: Tile Based Game Development Map by Inglor
AS: Movement - Random by Begoner
AS: OOP (Object Oriented Programming) by Inglor
AS: XML by Inglor
Other useful links:
Flash: Shortcut Keys
Protect your swf (liljim's post)
Protect your swf
Cross-domain policies
Flash/ASP scoreboard
Flash/PHP scoreboard
Sham Bhangal's Flash V-Cam
Liveswif 2.2 Free Flash maker
NG Preloader
Deadlock32 NG Preloader
Xenosteel's guide (very informative Flash movie)
My submission tips