They're lovely delicate sketches, watercolour, mostly, and very funny as well as moving. I liked it so much I may go back again before it closes in August.
Madness & Modernity is smaller, but just as fascinating, dealing with the influences of early psychiatry on the emerging modernism of early 20th century art and architecture. I was particularly drawn by the film of Otto Wagner's beautiful Steinhof psychiatric hospital , which is still in use. Its stunningly gorgeous chapel has recently been restored. They can chuck me in there right now.
They also have an amazing permanent collection, a nice bookshop, and a cheerful cafe. I've never bought anything, but it looks like a pleasant place to hang for a while. The library looks really good, too. i may join up. (All free!)