Here are a lot of the more well put and explanatory threads Ive been involved with over the years. There are a lot more over in WH but their new site blows and the search is a pain to use, so I probably wont be posting much from there otherwise they come from all over the place.
Determining the side being viewed for a 3D movie clip (FP10+)
[size=4]General (AS3)[/size]
ByteArray (BitmapData.getPixels, corrupting/uncorrupting SWF data)
http://board.flashkit.com/board/showthread.php?t=720498
bitwise NOT operator
AS3 Tip of the Day
[size=4]General (AS1/AS2)[/size]
Deforming objects with triangles
http://www.actionscript.org/forums/showthread.php3?t=128444
Oddities in Removing Components
http://www.actionscript.org/forums/showthread.php3?p=491633#post491633
The Color Object
http://www.actionscript.org/forums/showthread.php3?s=&postid=159709
Associative Array Referencing
http://www.kirupaforum.com/forums/showthread.php?s=&threadid=12082
"Soft" References with MovieClips
http://www.actionscript.org/forums/showthread.php3?t=45082
Relative and Absolute as in Referencing
http://www.kirupaforum.com/forums/showthread.php?s=&threadid=12462
Random Numbers
http://www.kirupaforum.com/forums/showthread.php?s=&postid=81617
_global
http://www.kirupaforum.com/forums/showthread.php?s=&threadid=12948
http://www.kirupaforum.com/forums/showthread.php?s=&threadid=17389
#include
http://www.actionscript.org/forums/showthread.php3?s=&threadid=29521
Use of switch
http://www.kirupaforum.com/forums/showthread.php?s=&threadid=15407
Object.watch
http://www.flashkit.com/board/showthread.php?s=&threadid=428453
http://www.actionscript.org/forums/showthread.php3?s=&threadid=25915
Movieclips in Buttons
http://www.kirupaforum.com/forums/showthread.php?s=&threadid=19984
Back and Forth in Arrays
http://www.kirupaforum.com/forums/showthread.php?s=&threadid=15558
Hex colors as/from RGB
http://www.were-here.com/forum/tm.asp?m=1265553
How || operates
http://www.actionscript.org/forums/showthread.php3?s=&threadid=25931
QT VRObject in Flash
http://www.flashkit.com/board/showthread.php?s=&threadid=379970
Isometric
http://www.kirupaforum.com/forums/showthread.php?s=&threadid=15767
"How Actionscript Thinks" (an attempt at least ;))
http://www.actionscript.org/forums/showthread.php3?s=&threadid=31272
Intro to XML and editing it in Flash
http://www.kirupaforum.com/forums/showthread.php?s=&threadid=13697
Trigonometry and rotating a 2D vector
http://www.kirupaforum.com/forums/showthread.php?s=&threadid=12181
3D in Flash
http://www.actionscript.org/forums/showthread.php3?s=&threadid=31108
enterFrame event
http://www.actionscript.org/forums/showthread.php3?s=&threadid=28620
Tricks of the Trade
http://www.kirupaforum.com/forums/showthread.php?s=&threadid=14268
Flash to Director (and Directorâs âmeâ)
http://www.actionscript.org/forums/showthread.php3?t=58278
EventDispatcher vs AsBroadcaster
http://www.actionscript.org/forums/showthread.php3?t=68068
Accessing a Movie Clipâs Frame Code When it First Appears on Stage
http://www.actionscript.org/forums/showthread.php3?t=68966
[size=4]OOP (AS 1.0)[/size]
import and classpath
http://www.actionscript.org/forums/showthread.php3?t=134660
What prototypes are
http://proto.layer51.com/d.aspx?f=645
Inheritance among Classes
http://proto.layer51.com/d.aspx?f=604 (see comments)
http://www.actionscript.org/forums/showthread.php3?s=&threadid=28896
Movieclips Inheriting from Classes
http://www.flashkit.com/board/showthread.php?s=&threadid=430658
http://www.flashkit.com/board/showthread.php?s=&threadid=459377
proto etc. (in depth)
http://www.flashkit.com/board/showthread.php?s=&threadid=462834
addProperty and prototypes
http://www.actionscript.org/forums/showthread.php3?s=&threadid=28857
Multiple Inheritance Workaround Using __resolve
http://www.flashkit.com/board/showthread.php?s=&threadid=461833
super()
http://forums.ultrashock.com/forums/showthread.php?s=&threadid=21186
http://www.actionscript.org/forums/showthread.php3?s=&threadid=28710
Movieclips in Objects
http://www.actionscript.org/forums/showthread.php3?s=&threadid=28748
prototype vs _global
http://www.actionscript.org/forums/showthread.php3?s=&threadid=30048
init and apply for classes
http://www.kirupaforum.com/forums/showthread.php?s=&postid=187502
http://forums.ultrashock.com/forums/showthread.php?s=&threadid=28549
OOP âcreaturesâ exercise
http://www.actionscript.org/forums/showthread.php3?s=&threadid=26314
Small thing about ASBroadcaster with all Instances of class
http://www.were-here.com/forum/tm.asp?m=1265396
Also, a little less AS oriented, and more Flash MX in general is:
Flash MX, The Things You Might Have Missed
http://www.kirupaforum.com/forums/showthread.php?s=&threadid=23051
MXP and Packaging Components
http://www.actionscript.org/forums/showthread.php3?s=&threadid=30391
Im doing this before I forget them though Im sure there is some gold out there which has long since been wiped clean of my memory. Ill try to keep future goodâuns posted here and add any I might recall from the past that are not already included.