Don't forget that you can download a copy of Twelfth Night, starring David Tennant as Malvolio, from BBC Radio 3 here.
About the play:
A comedy of misrule and a trenchant attack on puritanism as disguise and deceit leads to misadventure, madness and mistaken love in one of Shakespeare's happiest plays. Orsino loves Olivia but she loves Cesario who really does love Orsino for Cesario is actually Viola. But Malvolio believes his mistress Olivia loves him as he is a victim of a trick played on him by those who would make him mad. Shakespeare unravels a comic knot and fashions a masterpiece.