I just saw a thread about getting a phoenix mount

It was only just the other day I found out if I did the culling of stratholme heroic, I could get a bronze drake. So I've got my first, four to go!

I also found out I could use my frozen orbs to get a couple of magic carpets - woo!
Also papa's new bag, epic 20/22 slot bags might be worth farming.

So what other heroics/raids are worth trying to do with five chars for drops? (currently 82 (40-55k health chars) but looking for end game options too)