I'm currently building a combat encounter where the statues move around to give the enemy cover. It reminded me a lot of the more dynamic combat encounters in the published adventures. What combat encounters did you create or face in your games that were far above the standard combat?

Mine:
  • PCs against Wind Elementals while dangling from climbing ropes 100 ft over a bamboo spike pit. The players managed to avoid the Elementals, but then when they were at the top of the pit they used it against the enemy leader.(Who due to 4e's crap ton of HP survived)
  • PCs against an Ancient Black Dragon that managed to capture 4 adult dragons of varying colors to power his Deathstar. At the start of combat he released the White Dragon, at every 1/4 health lost he released another one. Set on a non-OSHA certified platform without railings over looking a 100 foot drop.