Mamma Mia will be tres ghey!
The 2 main chars in Wicked are great singers, really helps with the show. I was very suprised by how much I liked it tbh. It has made me look at The Wizard of Oz in a different light! Excellent story that is very well played out with subtle ties into Wiz of Oz (see if you can notice them!!) :]
Book early though and aim to be no further than half way back, but not too close as you end up lower than stage level.
The blonde is a stunner imo, she needed me inside her tbh.
Oh, if you want a nice hotel - radisson edwardian leicester sq. Don't book too early, about a week before you need to be there you will start to see deals popping up, about 4 days before you need the room there will be vat, breakfast and a decent room all bundled together, saving over £130 for a night usually. I've stayed there about 5 times this year and will continue to use the place.
I asked them to get me some flowers on checking in about 2pm, for breakfast the next morning. I completely forget after that point to tell them what flowers or when breakfast would be (so they were pretty screwed), when we got back to the hotel (after the show) I remembered, popped down to the night porter and after a few phone calls it became apparent the the lovely receptionist had ordered them anyway, a nice set of roses for about £30 and they were keeping chilled in the radisson hampshire about 30 metres away

Very good service.
Also, you have Casino at the Empire in Leic Sq, casinos now let you sign up and walk in on the same day (used to have to be 24 hours or something), so you can go in there for some drinks and a bit of light gambling, always fun for a girl on her bday. then take her back to the room and hope you both get lucky :p
taxi to victoria apollo is about £15 and about 15 mins depending on traffic, but if you are making a deal of it and dressing up, then its nicer than spending 20 mins on tubes getting hot and uncomfortable!
You don't 'find' who you are, you make who you are.