The people at dvdfile.com have presented a fascinating list of their "top 10" unforgettable Criterion Collection releases.  If you're a fan of cinema and collect films on DVD or BluRay, then the Criterion name should be well known to you.  If not, Criterion is a company devoted to releasing pristine copies of foreign and American films that are considered works of high quality.

Many of their releases include films not available in any other way, some obscure art house classics while others may be controversial classics.  The dvdfile list can be found here:

http://www.dvdfile.com/views/article/the-criterion-collection-10-unforgettable-titles-83681

I can't add much to it as their choices are pretty solid.  Some of my favorite Criterion releases were purchased on Laserdisc, including Blade Runner (at the time, we were presented with the theatrical cut and the more violent European cut, but it was THE way to see the film back then) and the unrated version of Robocop (this was the first time this release was made available.  For those who don't know, the original cut, boasting only a few seconds of extra, very violent imagery, was not available until then).

I also treasure their release of M and The Most Dangerous Game (this could well be the most filmed and re-filmed plot in the entire history of TV and movie cinema).

Needless to say, I'm always on the lookout for their releases, especially now that they're getting into the Blu Ray game.