(Fortune) -- Stacey Snider, CEO, DreamWorks SKG of Viacom (Charts), ranks No. 50 on Fortune's 2006 list of 50 Most Powerful Women.

In April, Snider went from running Universal Studios to DreamWorks, where her budget is less than half what it used to be. But then, she gets to work with Steven Spielberg. Viacom, which bought DreamWorks in late 2005, needs Snider's creative clout to revive its movie biz.

By the key criteria Fortune uses in assembling its annual list - the size, importance, and health of each business in the global economy, and the momentum of each woman's career (along with her social and cultural influence) - there's no question that the power of women in the corporate sphere is rising.

Indeed, it could be called the year of the Most Powerful Woman CEO. The top seven positions on Fortune's 2006 Most Powerful Women list are held by CEOs.

Some other powerful women on the list include: Ginni Rometty, IBM (Charts); Ellen Kullman, DuPont (Charts); Pat Woertz, Archer Daniels Midland (Charts); Lisa Weber, MetLife (Charts); Meg Whitman, eBay (Charts); and Dawn Hudson, PepsiCo (Charts),

Next: Full list: 50 Most Powerful Women at http://money.cnn.com/popups/2006/fortune/mostpowerfulwomen/1.html

Plus: Most Powerful Women: 10 Highest-Paid at http://money.cnn.com/popups/2006/fortune/womenpay/index.html