I was going to say 'the dog's bollocks' but then I felt that would be unappetising.
Seriously though, I LOVE them. I have a 5 mo and previous pattern of buying fresh vegetables just keep meaning we'd drag ourselves to the fridge, open it, stare bleakly in and then order a takeaway, and a week later throw away the soggy puddles of courgettes etc.
I've made chicken fajitas with sliced frozen peppers and onions, chilli and this evening made a very successful shepherds pie utilising a casserole mix. Tell me your frozen veg recipe discoveries? I need to continue converting she.