I know a bunch of people would disagree with me here, but I'm in the minority that loves the extended cut of Terminator 2: Judgement Day. The theatrical version is nice, by all means - but the extended version just gives you that little extra. For example, I only found out with the extended edition that the reason the T-1000 "glitches" is because he is damaged by the liquid nitrogen, which extended shots show more of.
I am also a fan of the extended versions of these movies:
The Hobbit: an Unexpected Journey
The Hobbit: The Deslotation of Smaug
The Hobbit: Battle of the Five Armies
Lord of the Rings: The Fellowship of the Ring
Lord of the Rings: The Two Towers
Lord of the Rings: The Return of the King
Jingle All The Way
The Abyss
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If you enjoy the movie then I see no harm in having a little more.
