If you can get to the Théâtre de Chaillot in Paris and see his Contes africains d'après Shakespeare then please do: it is really a special event.
Otherwise, you could connect to the BSO website next Saturday, March 24 2012, at 7 p.m. (CET) and watch his --Brokeback Mountain inspired-- production of Eugene Onegin.
[dir- Krzysztof Warlikowski, cnd- Pietari Inkinen, cast: Simon Keenlyside, Pavol Breslik, Ekaterina Scherbachenko, Alisa Kolosova, Heike Grötzinger, Ain Anger, Ulrich Reß]
Finally, the must see show 2012 should be his new production of Poppea e Nerone (based on L'incoronazione di Poppea by Monteverdi) that will be premiered on June 12 at the Teatro Real in Madrid. The ticket sales will open next Tuesday, June 27!