I spotted a thread by a Google+ Community manager named Aygul Zagidullina on Google+ stating, "I want this badly on Google web search! Now."
She is talking about adding currency conversion support for Bitcoin.
Bing added it yesterday. Yandex Russia has it for a couple months now. Wolfram Alpha has it for who knows how long. But Google, nope, it can't convert between Bitcoin and the dollar.
Here is how Bing converts the currencies:
Google - just ten blue links with no smart answer - yet.
Forum discussion at Google+.