You know, I'm still getting used to this wiki thing. Some folks might like this list better. It's the same info as on the db seach, just presented Wiki style:
http://eq2.allakhazam.com/wiki/Category:EQ2_Collection_Quests
As you can see we have 272 collection quests tagged as such in our db. That could be a lot of AA!
What I'm actually doing here is making sure all collection items are tagged as such for searchability (we added the "Collection" Item category relatively recently), and making sure all collection items are hooked to their quests. When I get done with all that (ha!) I'll go looking for quests we're missing.
If you see bad or missing infoz, you can either edit the wiki entry yourself (love wiki!) or leave a note in the page comments for us and we'll do it :) Or if you're really shy, you can email me at calthine @ allakhazam.com. We crave screenshots, too!