I was going to suggest Bhuna too. Lamb and spinach is lovely though my favourite has to be Biryani as I love rice, lamb chop starter too and poppadums with onions in that lovely red sauce...oh I so fancy an Indian takeaway now! :)
Rhogan Josh or possibly Dupiaza - this is the menu from one of my favourite restaurants - it gives useful descriptions of all the standard dishes (and some of their own specials too) :
Had shut down and have opened up - whatever you have chosen for me in the recipes - I really don't like lamb. So can I still have Bhuna. Thanks again - that sticks in my dopey mind. Night Abers - it is really good to talk.
scroll down here to British curry house terminology - this tells you what each of the names indicates in the ingredients, really helpful http://en.wikipedia.org/wiki/Curry