DVD Profiler now includes an 'Easter Egg' section which I often found included easter eggs that have not been listed on many of the common easter egg sites. It also lists easter eggs for DVDs from various regions - not just region 1.
I'm thankful for sites like those that list Easter Eggs and stuff, but often I just don't have the inclination to go hunting for them. I do enjoy some of the 1's I've found, but its rare that I actually look for them, maybe I read about how to find them in a review or something. Still both of those sites linked to already are where I'd start.