A few ideas at http://www.vancouver-travel-tips.com/vancouver-tourist-attractions.html

Some good info at http://www.concierge.com/travelguide/vancouver 

and http://www.nileguide.com/destination/vancouver/things-to-do

Of course there's the official tourist board for Vancouver http://www.tourismvancouver.com/visitors/. I found these guys' twitter feed really good to keep an eye on http://twitter.com/myvancouver