Recommend a show in London

I’m going to London, and want to go out to the theatre. What should I see on Monday, 16 May? According to the London Theatre Guide, here is what is playing that day:

  1. 1984
  2. The Big Life
  3. The Birthday Party
  4. Blood Wedding
  5. Chicago
  6. The Cosmonaut’s Last Message to the Woman He Once Loved in the Former Soviet Union
  7. Elmina’s Kitchen
  8. Fame
  9. Henry IV, Part I
  10. Incomplete And Random Acts Of Kindness
  11. Losing Louis
  12. Mamma Mia! (I already saw this in the U.S.)
  13. Mary Poppins
  14. Les Misérables
  15. The Mousetrap
  16. Patti Boulaye’s Sun Dance
  17. The Producers
  18. Saturday Night Fever
  19. A Single Act
  20. Some Girl(s)
  21. Someone Who’ll Watch Over Me
  22. Theatre of Blood
  23. The Woman Before

Anyone have a recommendation?