Homeboy, here are some of my favorite TV shows to watch:
The Walking Dead: You've probably heard of it, and it's in it's 3rd season (i think) May be a rough place to start. Great, entertaining show overall.
Falling Skies: While every show is on it's break, Falling Skies starts. Watched all of its first season last year (once again middle of the plot and everything) and loved it. It's refreshing on a number of levels: new apocalypse scenario, more military-esque, and a lot more science and nerdism involved.
The Office: Like you said already.
Doomsday Preppers: Was on last night in fact. Funny as hell how some people take this shit so seriously. Shows peoples survival strategies past Judgment Day.
Ax Men: Deadliest Catch with out the crabs! A lot like Deadliest Catch in it's drama and layout, but focuses on the lumber industry.
Surviving the Cut: This show hasn't had some new stuff in a little while, but for a new viewer its pretty cool. It takes behind the scenes in military training. Basically the process of how SEAL became a SEAL.
That's it, and if ur wondering I have a dvr so I can watch these whenever I want.