During our last gaming session, the party was on the hunt for a Vampire. When we found him, he had dozens of undead servants. The Sorcerer used hallways to bottleneck them and cast Lightning Bolt. The Paladin used Moonbeam on another corridor. I used Destroy Undead with my Cleric. For some reason, the Rogue wasn't on the ball, and attacked last in the initiative order. It also gave us time to ponder what the Rogue could do in light of a scenario that seemed to clearly favor the rest of the party.

The Rogue made a Sharpshootier attack on an undead down a narrow passageway, killing it and a couple others directly behind it. On the next round, he made a melee Sneak Attack to help some of us being surrounded by enemies. He burst into a target, shredding several into rotting bits by the time he was done. I think this was a very good use of an optional rule. It allowed a class more known for high damage on a single target to be equally as effective during our game session.