This Doctor Who screencap contains
snap randhut, schnappen sie randhut, snap krempe hut, filzhut, homburg, stetson, trilby, fedora, stetson trilby, kampagne hut, and kampagnenhut.
There might also be
markröhre hut, helm, tropenhelm, topee, topi, pith hut, pith helm, sonnenhelm, mark, hut, and sonne helm.
WARNING Series 4 Spoilers Long story short, The Doctor keeps seeing Rose where ever he goes, but it's just his memories playing tricks with him. Till he really does see Rose and well I don't wanna spoil the end for ya.