The Royal Ballet's Alice's Adventures in Wonderland is their first new full length ballet with new music in over 20 years - and it is brilliant. I'd strongly recommend to anyone who likes ballet, enjoyed the book and/or appreciates superb stage/costume design - and there are loads of cheap seats if you book ahead (£5 in the upper slips...)
They've captured the story, the specific scenes and the sense of fun and punning - but entirely through dance. And they've snuck in some funny inter-textual (or inter-dansual?) jokes too.
Also - watch out for Simon Russell Beale as Duchess.