ANH:
Changes I Liked:
Basically everything on-board the Death Star
Adding the Millennium Falcon to the landing shot on Yavin IV
CGI shot of Rebel fighters taking off
The Luke-Biggs reunion scene

Changes I Hated:
All CGI additions to the Tatooine scenes
The horrible new Krayt dragon scream
Greedo shooting first

ESB
Changes I Liked:
Correcting the uniform pips on some of the Imperial officers

Changes I Hated:
"You were lucky to get out of there"
Altering the dialogue between Vader and the Emperor
Almost all of the Cloud City changes (the Tibanna gas mine in an establishing shot doesn’t bother me)
Changing Boba Fett’s voice
Vader’s shuttle to the star destroyer

ROTJ
Changes I Liked:
Adding ropes to Han’s ankles
New ending music
Short deleted scene of Luke hugging Wedge during the celebration

Changes I Hated:
Hayden Christiansen
Jedi Rocks
All CGI additions for the scenes on Tatooine
CGI celebration scenes
"NOOOOO!!!"

I feel pretty neutral about the rest of the changes (Wampa, extra stars added to the sky as R2 is taken to the sandcrawler, extra detail on the Yavin base, etc)