Not a chance.
There are alts that have promise, but none will take over bitcoin.
Alts with promise:
* PPCoin
* Primecoin
* Namecoin
* Litecoin (not for any real reason, just because it's second on the list).
Quarkcoin is slowly making its way up. They have multiple algorithms (6 to be exact), and the transactions are super fast. It is gaining a lot of interest, but it was pre-mined A LOT.