Two occasions, same GM (and we had a bit of a strained relationship before and after this):
1. She ruled that I would need to do a Bluff roll rather than a Survival to try and cover my tracks out in the wild.
2. She also ruled that a Fireball wouldn't harm an opponent suffering from Silence (it was cast by someone far outside of the radius of Silence of course) since the spell Fireball had a verbal component.
A semi boss had a few of the party under the effects of Fascinate (as per the bard skill). While in the same room, combat started, the room was set on fire and damage was dealt back and forth - but nothing was deemed severe enough to break the distraction.
"Fascinate (Su): At 1st level, a bard can use his performance to cause one or more creatures to become fascinated with him. Each creature to be fascinated must be within 90 feet, able to see and hear the bard, and capable of paying attention to him. The bard must also be able to see the creatures affected. The Distraction of a nearby combat or other dangers prevents the ability from working. For every three levels a bard has attained beyond 1st, he can target one additional creature with this ability."