When/where will the Dajjal (the anti-christ) appear, what does he look like, and what will he do?

I have heard lots of things about Dajjal's personality, presence, etc. I thought it would be great to ask in this community. - When will Dajjal appear? - Where will he appear? - What would he look like? - Would he have some kind of powers? - What will he do? These are the questions in my mind about Dajjal.