I don't have any that I couldn't live without watching these days, but I do DVR a few for veiwing in the mornings when the house is quiet after the husband has gotten the kids off to school.
House, Hawaii 5-0, NCIS, NCIS - LA, Criminal Minds, Hot in Cleveland, Parenthood, CSI, The Mentalist, CSI-NY, Army Wives, Eureka. This is just what I DVR, I have some shows that I catch when they are on or during summer rerun season like Deadliest Catch, and HGTV. But I could miss any and all of these shows and be fine.
While we do watch it, there are many times in which I am watching something I don't particularly like only because I get to snuggle with my husband on the sofa.