Yeah, I'm with you on that. LA proper is really not that interesting for tourists IMO. LA great for eating and for nightlife, but not for tourist attractions. Hollywood is fine for like a 1/2 day, but I'm not sure if it's a "must-do", except to say that you've seen it. See the Hollywood sign, see the Walk of Fame, maybe the Chinese Theater, then you're done.
These are horrible recommendations and places tourists should avoid. LA has tons of great tourist attractions: Getty Museum, Griffith Observatory, CA Science Center, Petersen Museum, La Brea Tar Pits, Original Farmers Market, Huntington Library, etc. How many of them did you visit?