Bitcoin is Bitcoin, there are altcoins however. But what they may be worth or not is totally unpredictable.
The second third is worthless. After the first paragraph in Mr. Lee's answer, "Litecoin, Namecoin, PPcoin, Devcoin, Terracoin, NovaCoin, Rucoin, Freicoin, Ixcoin, Liquidcoin, Solidcoin, I0coin, BBQCoin" Plus 10 million cottage coins, you understand why they are worthless.