I have been VJing for a number of years now, playing in both small clubs, and large festivals. I use Resolume 5 and madmapper. My speciality is improvising and jamming on the spot, but I am also accustomed to rehearsed/timecoded performances.
Many musical artists have complimented me for my ability to stay on beat and play video in time. I find that synchronization between visuals and music is a huge factor in making a show truly engaging.
Beyond my rythmn, I also have an understanding for branding and narrative. When given the task to arrange/create content, I find it incredibly important that the video represents the artist, remains consistant to it's theme, but also evolves gradually so that it tells a narrative.