Ideas for Plug-ins

I've been looking at ideas for my Forum page and for my Polls page (if I get to it), and have the following options:

Polls
http://itlpoll.sourceforge.net/#
http://www.checkbox.com/community/ultimate-poll/101-free-ultimate-poll-software-java-ajax-asp-technology.html
http://www.dbscripts.net/poll/

Forums
http://vanillaforums.org/
http://www.phpbb.com/
http://www.phorum.org/

If anyone has any thoughts, other options or advice, I'd love to hear from you!