Best shows thus far...
Waiting for Godot (Patrick Stewart and Ian McKellen), Phedre (Helen Mirren, Dominic Cooper), The Observer (James Fleet, Anna Chancellor), All's Well that Ends Well (Mrs. Bale from As Time Goes By! and others!).
I highly recommend any of the above. 3/4 are at the National Theatre complex, which I love. I've done other things, but have been enjoying things that are special and that I couldn't see elsewhere. All's Well was via the half price booth. Godot and Phedre I bought online in advance. For The Observer, I bought at the box office a few hours before (highly, highly recommend this play!).