I thought it might be useful to set up threads with good YT clips of particular bass styles (eg, funk, metal, latin, jazz etc) but since I am a bit besotted with my Wal at the moment thought I'd start with fretless bass. Feel free to chuck in further clips so it can be a sort of style library for those interested in delving in.
This guy is a very melodic player of a fretless Wal 5 string - here's his version of Jaco's 'Come on, Come over' followed by a very easy-on-the-ear improvisation over one chord
http://www.youtube.com/watch?v=lhr6I8YVpqo&feature=channel
http://www.youtube.com/watch?v=g_-zr5AwQbU&feature=relmfu