I've got two days in Tokyo before heading off to Australia - I've never been to Japan before, but I'm dead keen on seeing some of the sights.
Can anyone please tell me what are the top 10 things I should see and do while I'm in the crazy city of Tokyo?

In Tokyo, eating is very interesting experience. Because
there are many restaurants in Tokyo. Normally lunch time is
reasonable for good restaurants, because Japanese are very
stingy for a lunch expenditure so many restaurants offer a
lunch menu for discount price. There are buffet style of
restaurants in Shibuya, Shinjuku, and Ikebukuro area about
1000 Yen for all you can eat for lunch time only.
Sushi bar ( Kaiten zushi, belt Conveyor )
http://web-japan.org/kidsweb/manga/0711/images/kaitenzushi.jpg

in any near JR Stations, the cost is starting 100 Yen per a dish. This is good deal for all day.
http://www.kotsu.metro.tokyo.jp/english/index.html
For Other place to see.

1?There are numbers of aquariums in Tokyo, you can visits
any of the places depending on where you will be, it is great experience to see.

2?You can visit Yokohama and Kamakura for a 1 day trip.
There are English web site to see how to go there and what to
see there.

3 There are free admission place to see including public and
private museums; NHK Broadcasting, currency museum,Banknote & Postage Stamp Museum.

4
http://www.tourism.metro.tokyo.jp/english/
Here?is Tokyo tourists information web site.