I have some blu-rays that have several versions (that i like more than with digital copy), maybe you can post/share other titles:
Here is my personal list so far:
Alien Anthology
Avatar Blu-ray Extended Collector's Edition
Fast Five
Gladiator Sapphire Edition / Extended and Theatrical Cut / Remastered
Hostel Director's Cut
The Lord of the Rings: The Motion Picture Trilogy - Extended Editions
The Patriot Extended Cut
Robin Hood
Salt Deluxe Unrated Edition
Sex and the City: The Movie Special Edition
Sin City Unrated, Recut & Extended
Terminator 2: Judgment Day Skynet Edition
Terminator Salvation Director's Cut
Troy Director's Cut