<...deep breath...>
3 years ago we got stuck on BTM just going up the main 'collapsing mine' climb. DW was not impressed, was immensely scared, and not at all happy that we were all laughing about it. We sat for around 10 minutes, waiting for the CMs to come to the rescue which, once they did, lead us inside the ride, very much behind (and indeed beneath) the scenes!
2 summers ago we stopped off at DLP for an evening plus following morning, as a stop-off from our main holiday. We got stuck on Small World, just before the queue at the end. After around 15 minutes, the pair of CMs that had eagerly attempting to rescue everybody, suddenly stopped doing so and walked off, leaving us sitting in our boats, music still playing (trust me, as a result of this experience it's still playing in my head today). They must have been instructed to wait for the fire & rescue team, presumably to avoid accidents, claims, etc. Anyway, we eventually got up the courage to bravely leap the 50cm or so to the safety of the side platform.

Been stuck on, wait for it, Buzz Lightyear millions of times, lol. No news there (no problem there, either, just higher scores...).
Next there was Rock 'n' Rollercoaster.
Just before the initial 360 loop. 0-60 in 2 seconds / 60-0 in something like half a second! Phew.