I think the guys at I Watch Stuff are basically correct to declare that "Is anyone else as pleased as I am that a generation's greatest actress has descended into becoming Hollywood's female Darrell Hammond?" in response to the news that Meryl Streep is going to play Maggie Thatcher. I tend to think that Brassed Off (about a brass band in an English coal town) is perhaps the great movie about the human cost of Thatcherism, though not the lady herself (and of course it doesn't take into account the environmental impact of the move away from coal), and besides, the music's great:
And:
That said, I think there aren't enough movies that have female leaders in times of war, so even if this is just the Falklands War, and even if the woman involved is Thatcher, it's an interesting project.
But truth be told, the Thatcher-era project I'd really like to see get made is the Adrian Mole series. Cast Aaron Johnson, let him be as awkward and as horny as he was in Kick-Ass but a whole lot more intellectually striving and endearing, get someone physically and mentally smashing to play Pandora, and let the two of them translate England. It'll never happen, of course. Too specifically British for international audiences, as everything seems to have to be aimed at these days, and too damn smart, even if Adrian himself is really mostly only a poser.