NS1 in-game Trailer Contest for fans and players to show what they got (with a good prize: three copies of NS2 or something ) a good trailer is probably only possible from a clan or group. One copy of NS2 can't be enough, or maybe something else as prize?
All contents will be gathered on forum, links will all be from youtube with specific "tag"s, read forum rules etc.
pros: Ad for NS / NS2, getting the word out. (youtube) (spreading NS = spreading NS2, if they like the game, they'll check out the website etc.)