This was my favourite Harry Potter movie, so forgive me if I tend to be too subjective about it. For me this is the perfect transition between the children movies that were the three first and the more adult oriented ones that were the last three.
This extended edition of Harry Potter and the Globet of Fire shows this transition better, explaining things that were not in the original film like the rock concert.
Joe is probably right that this could benefit from a true fan edit touch, but as an extended edition this one delivers!
The Hoggy Hoggy Hogwarts song was priceless, and the Snape/Karkaroff scene is good, making me wonder why it was left out in the first place!
“Do the Hippogriff” on the other hand has no place in the movie. It’s really fun extra material, but that’s where it should have stayed.