TV and movies is a lot of word of mouth for me. If I hear about something that might be interesting I’ll look more into it.
I watch anime and a lot of the suggestions come from forums or online word of mouth.
Videos from YouTube and Nebula play into suggestions as well.
For music it’s pretty wild. Because I’m open to a lot of things I’ll take any source. I read a few blogs, visit a few forums, watch videos, work from ratings lists or even pick it up from being used in things. Discovered a new band this morning based on looking at upcoming gigs in my area for example.