Hey, I'll go ahead and do the embedding if you don't know how to (instructions are at bottom of TankSpot forums), but let's start populating this forum. I've seen plenty of great movies, previews, etc, but I don't have time to catalog them all myself.
So, post a thread with a single movie link in it with a descriptive title (i.e. 2007 E3 Tabula Rasa Preview). If you don't know how to embed, I'll edit your post and embed the movie for you.