TV again

Apparently all of my updates are television updates now.  I have no attention span when it comes to TV shows.  Somehow I ended up watching a ten-minute clip of Susan Ivanova from Babylon 5 being generally fabulous.  Babylon 5-watching flist, is this something I can expect on a regular basis if I start watching the show?  I would watch a whole show just of her if she is always this kick-butt and funny and smart.  Or are the other characters as much fun as she is?  Is it best to start at the beginning, or are there seasons/episodes that are more entertaining overall?