My wife just got back from placing a candle for Václav Havel at Václavské náměstí in the center. Here's some pics:
I don't have much to say about this great man that others haven't or will be saying much more eloquently. As with Hitchens, I didn't necesarily agree with him (Havel was always, like Orwell, firmly on the left), but he was a man of principle, someone willing to stand up and take a big hit for their beliefs.
Update: great video via Pavol Hardos, via Reason.
At the end Havel says, for what I assume was a theater PSA, ""Thank you all for turning off your mobile phones. Truth, love,
must win over tanks and hatred. Turn off your telephones."
Correction: Ondřej, a native Czech speaker, writes that it is "lies and hatred".