This Doctor Who screencap might contain
fedora, cappello di feltro, homburg, stetson, stetson trilby, paglietta, livorno, panama, cappello panama, marinaio, skimmer, il cappello di paglia, and cappello di paglia.
I've been watching a lot of "Doctor Who" lately and saw "The Dark Knight" a few times, and it seemed like The Doctor probably wouldn't put up with Batman for too long, and the Joker even less.