Here are MarketWatch's top 10 stories of this week. Also, please have a look at our videos previewing markets next week in the U.S., Europe and Asia.

US stocks pulled back on Friday amid investor worries over Greece's debt crisis, Chinese policy on monetary tightening and domestic political uncertainty over healthcare reform dampening risk appetite.

Opponents and supporters of measure, now hurtling toward a critical vote in the House, make their last-ditch attempts to sway public opinion on what may be the biggest piece of legislation in decades.