Did you see the movement on Sareum Holdings (SAR) the other week?
I tried to buy in at about 1.2 from a move from about 0.5 I think but my trading account did not support the option. Gutted at the time as it went up about 350 - 400% in on day. It has retraced substancially though so the news was obviously over done.
Its definately on my watch list though.