I usually watch bass players, almost studying their finger movements...but a lot time I also gravitate towards drummers too. Sometimes I'm amazed to hear all those different sounds coming from 4 limbs...
Speaking of what people like to listen to and to toot my own horn, there are 2 songs we play in our band (Californication by RHCP and Starlight by Muse) where more often than not, the rythm guitarist will just keep strumming the same chords as everyone else progresses through and at the end of the song we ask what happened and he replies "Oh man, the bass line just hypnotises me when he nails it like that".
I don't think I'm good enough to warrant that kind of comment, and I am just covering someone else's basslines, but it's a good feeling when I hear him say it
