I have been using this Clark Moody webpage to track the price of Bitcoin on MtGox. A nice animated order book is provided, along with a good chart.
Are there similar pages but for other exchanges (because MtGox...)?
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What about http://bitcoinwisdom.com/? It visualizes data from 14 different exchanges.
My favorite: https://bitcoinity.org/markets/mtgox/USD
10 time spans
Clark Moody is what I choose for quick glance as it offers basic candlesticks, MA and orderbook but orderbook is not visualised (as far as I can see), anyways if You want deeper in both directions:
both have access to major Bitcoin exchanges, and are free.