I have not been tempted to go to the exhibition but I have got tickets to the (half of-)Os Mutantes reunion there in May (squee!) and got the Tropicalia compo from Soul Jazz (which is really top stuff, if you like that kind of thing, which I do ever since someone on the Gorkys Zygotic Mynci mailing list recommended the Mutantes).
A friend also waxed lyrical on the films, but that, my friends, is what DVD players are for.