I am very hopeful about the possibility of a good "domino effect" producing a series of democratic states in the Middle East. Egypt is the most hopeful, with Tunisia close behind. Yemen is imaginable, though a long shot. The new nation of South Sudan, or whatever it will be called, is likely to at least to attempt to begin as a democracy.
Some friends to my right politically are worried that people in that region are not culturally ready for democracy, and fear that removing useful dictators will create a power vacuum for something worse. This is, of course, a real possibility, as Somalia shows. Nonetheless, I am very hopeful about a democratic movement that begins in massive, peaceful street protests, supported by a varied (and competing) set of opposition groups.
Other people on the news have been worried that free elections might bring to power people we do not like. Liz Cheney, who supported the Palestinian elections in 2006, now thinks they were a mistake because they brought to power a group she does not like. I think this position is based on a legitimate fear, but also on a basic misunderstanding of democracy. There is no contradiction in a democratic nation electing a government that opposes other democratic nations, including opposing the United States. Indeed, if the U.S. has supported a dictatorship that prevented democracy, we should expect that the first free government would be anti-American.
Democratic governments, though, tend to moderate over time and to get along with others. This does not even take very long; the knowledge that another election is coming soon moderates extremists now. In general, democracy is good for peace, freedom, and prosperity. The people tend not to elect governments that keep repressing them. The people tend not to elect governments that make big wars which require popular sacrifice and interfere with trade. If there were a wave of democratic revolutions in the Middle East, it is likely that some of the first governments would be anti-American, and some would be more strongly Muslim (these are not at all the same thing). Even so, I believe the U.S. should support the democracy movements in the Middle East, and in all Muslim lands. This will create more moderate states that are less repressive of their own people, less threatening to Israel and the West, and better partners to the U.S.