1) Trivia contest pertaining to Channel 9 and its content
2) Scavenger hunt (ie where is the 9 guy in his first out of office experience?)
3) Another Coding contest
4) Essay contest (for those unfortunate non-programmers out there) like "Why Channel9 is the best thing since sliced bread" or "How channel9 has helped me the most"
5) Name that "geek". Put pictures of people from different videos on a page and have people figure out who they are.
Of course, decent prizes for each.