I have two other ideas from other forums I read:
(1) A weekly, or maybe in the case of this forum monthly, digest of the most worthwhile threads posted during previous week/month. If a regular poster is interested in doing this and can be consistent about it for a while just let me know and I'll sticky the post once you've gone through the last month and found the best 5-10 threads. Whoever does this may want break the digest up into limit and pot-limit posts. This practice is good not only because it can help take care of FAQs but it also revives good threads that people may have overlooked.
Example of a Digest.
(2) A "How Good is your O8" type post. In the small stakes NLHE forum a poster puts a hand together and posts it with a poll for each street. It's interesting to see what the majority of people would do on each street and it often provokes some good discussion. No need to volunteer for this one just do it and I'll make it a sticky till it burns out.
Example.