Wow, I thought I was the only one who doesn't care for Fantasmic or Illuminations!! I would actually like Illuminations if that dang globe was about three times as big so I could actually see the images; the sound is also very spotty depending on where you're watching from. But F is just so long and slow IMO. We don't care for VOTLM either--damp and dull. I agree that most castle shows are cute but pretty easy out-prioritized by other stuff. Same with parades.
On the other hand, we rarely skip any of the musical acts in AK if we are near the area at the time--they are all just amazing! Ditto for all the MK performers on Main Street and otherwise. It's such a treat to run into Dan and his banjo band (that's close but not exactly right!) or the Fantasyland brass guys, the Dans, etc. We always stop for that stuff. Most everything else we like and we see if convenient, but skip if not (as Angi says, after the 10th time or so...). We've not seen HEA yet, so that's s must for next time.