It's not unusual to hear people make snide remarks about the Old Testament. People are sometimes referred to as "Old Testament Christians" or as having an "Old Testament answer" to a situation. I recently heard someone remark that they were going to "go Old Testament" all over someone, which I took to mean that they were going act in some violent, wrathful way.
To hear some Christians talk, there is really not much need for the Old Testament in the Christian Bible. Sure there are some great stories there (Samson, David and Goliath, etc) and who doesn't enjoy at least some of the Psalms and the occasional cheeky parable. But most don't see much point to the Old Testament apart from serving as a very long preface to the New Testament.
In the video below John Goldingay, professor of Old Testament at Fuller Seminary, asks a different question. Do we need the New Testament? Goldingay does a good job of explaining how much of what is thought to be "New Testament" thinking and theology is actually take straight from the Old Testament.
HT: Nijay Gupta