The answer's quite simple... and that is you must see Matilda.
Where are you from? :)
Would your18 year old cousin like Wicked? Looserville is good fun (and is closing Jan 5th)
The Woman in Black is always a must see.
Steel Pier is on at the Union Theatre and, yes, Top Hat and Singing in The Rain are fun "retro' shows.
Nick Hutson
Co-Presenter/Producer
MusicalTalk - The UK's Musical Theatre Podcast
http://www.musicaltalk.co.uk