Pen-ek Ratanaruang’s Headshot is screening tonight, 8.30 at the ICA, as part of the Pan-Asia Film Festival. Here’s what I had to say about it for a piece in LWLies. Thailand-set Headshot is perhaps LWLies’ favourite film of the festival. It presents itself as a noirishly pulpy crime thriller complete with shadowy shootouts, a pair of femmes…