Some more caps-a-holic links, with Full Screen comparison versions:
Cujo (UK and CH Versions are Full Screen.. well CH Version is very bad...)
Killing Zoe (the old German release in the comparison was Full screen.. without english Audio)
Braindead (okay, UK and AT are not Full Screen, but has an odd AR)
The Dentist (German languaged DVD is Full screen... not english friendly)
Jackie Brown (old German DVD was Full Screen. WideScreen was achieved with a subtitle track containung Black Bars...)
Jason goes to Hell (UK DVD)
American Ninja 2 and American Ninja 3 (both have Full screen US releases)
Army of Darkness (old German DVDs)
and as an example: First DVD Releases of Stanley Kubrick movies, like "Full Metal Jacket"
And here is (maybe again?) the link to the comparison of Euro Cut of Dawn of the Dead (first german release is 1.33:1 open matte)
Very Bad Things (old german Full Screen DVD open matte, but slightly censored)
...and we never should forget old Disney Movies. ie.: The Djungle Book...