If you're looking to watch some new (i.e. new to you) shows on DVD (thru Netflix or whatever), here are some recommendations:
Six Feet Under: completely original and addictive, very emotional
Lost*: riveting and original storyline, good casting, marginal dialog
Entourage: light and funny, and a nice view of what an acting career can be like
Weeds: funny, original
The West Wing: smart, great acting, great dialog
* I've only seen the first season of Lost, so I can't comment on anything after that.