Being a PhD can be stressful from time to time. Subscribing to Coachsurfing could be an opportunity to both visit new place with a 'non-standard'spirit, and also take a break from a (potentially) monothematic way of life.

Music: Probably you would define it as 'alternative' or whatever. Radiohead, Muse, Sigur Ròs, Arcade Fire, Nine Inch Nails, etc. Also, quite a few of classic rock. Also, a lot of italian one. (E.g. Ministri) Also, a lot of Movies and Books. Just say, Star Wars first.