A new report provides a snapshot of the current mobile media landscape and audiences in the U.S., and highlights the potential power of mobile commerce in the near future.

Who watches the most TV? Women watch more than men, African-Americans outpace other ethnicities and older Americans tune in at higher rates than those their junior, according to the latest Nielsen Cross-Platform Report. The report shares video consumption across traditional TV, mobile and online.

In the Cross-Platform Report, Nielsen finds a resounding trend: Americans are spending more time watching video content on traditional TVs, mobile devices and the Internet than ever before.

The number of U.S. mobile subscribers watching video on their mobile devices rose more than 40 percent year-over-year in both the third and fourth quarters of 2010, ending the year at nearly 25 million people.

Nielsen’s latest State of the Media fact sheet shows that in the second quarter of 2010, U.S. television continued to reach more people over more platforms.

The Nielsen Company surveyed more than 5,000 consumers who already own a tablet computer, eReader, netbook, media/games player, or smartphone to get a better sense of who is using these devices and how.

As penetration of HDTVs, DVRs, broadband and smartphones increased at double- or even triple-digit rates during the last two years, viewing across all major media platforms continues to be fueled by the adoption of technologies that improve the consumer experience.

The Beautiful Game, or joga bonito as the Brazilians say, is coming to mobile. Globally, 21% of survey respondents said they would get at least some of their information from the Internet via their mobile devices.

While television is still the dominant media platform in China (the average home spends 6X as much watching TV as accessing the Internet), nearly half the households in the pilot study went online while watching TV.

We are at the beginning of a new wireless era where smartphones will become the standard device consumers will use to connect to friends, the internet and the world at large.