BTC-E appears to have an API available at https://btc-e.com/api/1/ticker but this only lists the BTC/USD pair data. They also offer pairs of BTC against alternate currencies like Ixcoin and Tenebrix. I've tried the obvious stuff a la https://btc-e.com/api/2/ticker but no dice.
I'll take an API from any other multi-currency exchange as well, really I just need a way to grab price easily from code without having to scrape HTML and deal with regex.