Whenever we discuss collections it is usually about bagged kits. But I happen to know Buzz has a hugely impressive collection of built kits. Check out his photos at:
http://www.cv41.org/personal/gallery/collection

(With enough money) anybody can amass a big collection of unopened kits, and I'm as guilty as anybody. But what I find much more impressive are those who have built and continue to fly so many classic models.

My friend Sandman is another with an incredible collection of built classics.

In our NAR group, member Shawn always shows up with some incredible blasts from the past that he loads up an flies like they were no more valuable than a WalMart Launchable. It's always huge fun to see these beauties fly.