These plug-ins were demoed or mentioned last night at the Montreal WordPress Meetup on January 14, 2010. I've listed them more or less in the order in which they were presented.

If I missed any, please let me know!

WordPress Mobile Edition
http://wordpress.org/extend/pl...

WordPress Touch
http://wordpress.org/extend/pl...

Stray Random Quotes
http://wordpress.org/extend/pl...

Tagline Rotator
http://wordpress.org/extend/pl...

Author Slug
http://wordpress.org/extend/pl...

Codestyling Localization
http://wordpress.org/extend/pl...

WordPress.com Stats
http://wordpress.org/extend/pl...

Subscribe to Comments
http://wordpress.org/extend/pl...

Defensio Anti-Spam
http://wordpress.org/extend/pl...

Google Analyticator
http://wordpress.org/extend/pl...

pageMash > Page Management
http://wordpress.org/extend/pl...

Widget Logic
http://wordpress.org/extend/pl...

Photo Dropper
http://wordpress.org/extend/pl...

WP-o-Matic
http://wordpress.org/extend/pl...

In-Series
http://wordpress.org/extend/pl...

Twidger
http://wordpress.org/extend/pl...

WP Ajax Edit Comments
http://wordpress.org/extend/pl...

Montreal WordPress Meetup Event: http://www.facebook.com/event....