Here's my usual skip list:
Magic Kingom
Country Bear Jamboree (I tried it last trip and it nearly killed me! The vacation themed one at Dland was SO much better!)
Tomorrowland Indy Speedway
I used to skip most of Toontown Fair, but now that I have a 3 yr old, it's a must see!
Stitch- I did it for the first time last trip, and it has been placed on the skip list.
Epcot
Mission Space- It was cool once, but not nearly as thrilling as everyone says.
Journey into your Imagination- It's just painful to see how the ride was destroyed!
Alot of the movies in World Showcase, but I really should take the time to see them this trip!
Disney Studios
There is so much I skip at this park!
Fantasmic- I've seen the one at Dland so many times and I know this one is different, but sitting in a theater just doesn't compare to watching it on the Rivers of America!
Playhouse Disney Live- it's the same show as Dland, which I've seen a zillion times, so I don't let dd know it's there!
The Great Movie Ride- I just can't get into it.
Backlot Tour- most of it seemed so boring last time. Maybe I'll try it again next trip.
Muppet Vision 3-D- Also at California Adventure, and it's a little violent for dd3.
Sounds Dangerous- Heard it sucks, so I never wanted to try it!
Star Tours- kinda boring to me.
Animal Kingdom
just the Flights of Wonder show. I love everything else in this park!