Wim Crouwel exhibition at the Design Museum - absolutely amazing! I definitely recommend that you go if you can, there's such a large collection of his work and the exhibition is beautifully designed too. Even the catalogue (by Unit Editions) is excellent. I found it fascinating to be reminded of how work, some of it created half a century ago, still looks so modern. Even if you're not a type geek, it's well worth a look.