One of the great things about having an Android phone is that you can view Flash content, including videos, that the iPhone can't render (at least, not right in the browser). But if all that rich web content is slowing down your browsing – or you're bumping against the limit on a metered data plan – you might not want to load all the Flash content on a page automatically. No problem.
On the Settings page of the stock Android browser, tap “Advanced.” On the next page, change “Enable plug-ins” from “Always” to “On demand” and restart the browser. Now when you get to a Flash video on a page, you’ll see an arrow icon where the content would be. Tap it to load that bit of Flash. Simple as that.