Stumbled on filming going on at Dublin Castle for The Tudors. The guys I spoke too weren't sure which episode it was (they think it 9-ish) but it's for season 4.

Since I haven't seen the show and don't know what's considered spoilery, I've put everything under a cut. There are pics and a video of the scene.

( The Tudors filming at Dublin Castle on 14th October, 2009 )