Honestly; in general if you've heard of it it's good. certainly for a few days. Get a guide book and pick out what interests you.

Avoid the Mousetrap (if you ask me nicely I'll tell you who did it).

I live here and if I had to show the place in two days I'd want to include the British Museum and the Cabinet War Rooms (which I believe is marketed in the USA as Churcills War Rooms or somesuch) and the National Gallery.

I'd take in a london pub walk rather than the Mousetrap to see the real city.

Other than that it's down to your taste. Straight? Gay? Old? Young? Adventurous? Conservative? Music? Theatre? and so on.

Theater - we will try to get tickets to Priscilla, Queen of the Desert; >>>>

Well that answers one question.......

If you are in town Thurs - Sat a nice 1/2 is Borough Market adn Southbank. Start at London Bridge station - Borough Market is across the road...follow the signs. Borough Market is a foodie heaven! Grab a bite to eat, then wander through the area (great crooked streets) to the river and then walk about the South Bank to the Millenium Bridge and the Tate Modern. You can also cross the bridge here and see St Pauls. Or keep walking all the way to Waterloo on the river. Lots of good pubs etc to keep you going.

You don't say how long ago you were in London but if it is any considerable time I would revisit the British Museum. There are new galleries for the Nebamun tomb paintings (Ancient Egypt) and the Percival David collection of Chinese porcelain, the medieval and clock galleries have just re-opened newly displayed and looking beautiful.

The Moctezuma II exhibition opens in 5 weeks and if you want to see it book now. Part of the world rulers series, more information on their website snippet here:

"This major exhibition explores Aztec (Mexica)* civilisation through the divine, military and political role of the last elected ruler, Moctezuma II (reigned AD 1502–1520).

* The people and culture we know as 'Aztec' referred to themselves as the Mexica (pronounced Mé-shee-ka). This will be reflected in the exhibition."

The Indian painting exhibition Garden and Cosmos is extended to October 11th, you can also book to see this or take your chance.

If the weather is fine you can explore any of the parks. The beginning of October is often warm (is it because the heating is switched on in public buildings?)

Theatre: Sister Act has also opened as a musical at the Palladium. Whoopi Goldberg was involved in the production but not performing. Have not seen it.

You can't go wrong with one of the London Walks. Check their schedule for the days you will be there at walks.com. They have pub walks, too.

Personally I'd go back to the British Museum before the Tower - I've been there many times and I always find something I didn't realize was there. For other museums, I'd also recommend the National Portrait Gallery (just behind the National Gallery, very close to Leicester Square) and the Victoria & Albert. If you go to the Tate Modern, you'll pretty much have to see Millennium Bridge.

Regents Park is my favorite park in town, but you really can't go wrong with any of them for walking. St James's Park is also nice, since you can go from Buckingham Palace all the way down to Westminster.

Definitely second the suggestions for the Cabinet War Rooms and London Walks.

I did a bunch of London Walks in May. You might consider one of their Pub walks. I did the Hampstead one. Nice area, nice beer.

The British Library Special Documents Room is amazing.

Skip Priscilla and see Jersey Boys instead. Covent Garden is fun for shopping.

Another vote for the Cabinet War Rooms.