I work full time. Plus, I check emails throughout the evenings and weekends to make sure the computers are doing what they are supposed to. But, I decided a long time ago that work wasn't going to interfere with my family life. Sure, there are sacrifices both ways. But, if my daughter has a tee ball game, I leave early to make it (plus I am a coach for her team). If there is a PTO event, I plan for it and make it. Work comes second to my family. I can always find another job, but my daughters will only grow up once.
On the plus side, my boss understands this and knows that if there is something that needs to get done that I will find a way to do it. Even if the means working from home at night after the kids are in bed.
Now, I would like to chime in the MSN article regard SAHP salaries. While I certainly believe that being a SAHP is a lot of work and that you aren't just sitting around watching soaps all day, the article is missing an important aspect of it. If you want to count being a SAHP as a job, then you must also realize that most full-time working parents are also working "second" jobs.
When I come home from work, I don't just plop on the couch, tell the wife to bring me a beer and watch tv. I pick the kids up from school/day care. I make dinner (though my wife and I typically split this duty as she works full time as well). I help my daughter with her home work. I do the landscaping, yardwork, painting, building things, fixing things, coaching sports, put the kids to bed, I help clean, etc. My wife does the same. So, it isn't all fun and games for us working stiffs.
Not complaining. Just making sure everyone is looking at the whole picture.