Twelfth Night is my favourite Shakespeare, so perhaps I am easily pleased, but this was an outstanding version with a really fresh feel, a cunning set, and, most importantly, lots of good jokes.
The big draw was Tamsin Greig as 'Malvolia', and she was fantastic, sending the audience into fits of laughter with something as simple as a well-timed pause but also going all out for extravagant physical comedy, and delivering her final line in a chilling manner.
A more radical departure, IMHO, than gender-swapping Malvolio was making Sir Toby Belch the most attractive thing on the stage. Played by the unknown-to-me Tim McMullan, he becomes a rakish alcoholic who is clearly trouble with a capital T but impossible not to like. (I gather from the existence of fuckyeahtimmcmullan.tumblr.com that it's not just me.)
Both twins were very sweet, and I spent their recognition scene silently shouting PLEASE JUST HUG ALREADY. (They did.)