Alright, here are some thoughts on Islington. The area is a bit more limited for me as I don't get over that way very often.
Pasha - excellent Turkish (as noted above); also close to the Kings Head pub, which is great. They do a pub theatre in the back that can be boozy fun at times
Trullo - one of the best Italians in London
12:51 - does a great tasting menu at a reasonable price. Really solid place
Ottolenghi - North African, with some Middle East influence. There are a few around London, with varying menus but the Islington one is good.
Sambol Shiak - good, quick cheap eats for laksa
Pig and Butcher - I echo what was said above. One of the best gastropubs in the area, along with Drapers Arms which has a nice beer garden on a sunny day
Smokehouse - have not tried but was considering it initially for this weekend. Then I saw the limited menu with 4 mains - a veg, a pasta, fish and pork loin. Could be good but too many other options in the area for my liking