My forum asks for a lot of personal info when people register, could an "SSL Registration" mod be made?
While you're at it, offer an SSL-enabled login page (and remove the "quick login" on every page). There have been many requests for protected login capability, and the response every time is "an SSL certificate costs money, so no one will want it for a forum".
After that, lost password requests, password changes, and profile changes would all be good candidates for SSL enabling.