When I worked at a local tv station, obviously we'd hear a lot of interviews. We used to mock those that, you know, just seemed to unconsciously, you know, toss in phrases, you know, like all the time.
For some it's such an unconscious thing, they don't even realize what they're doing. How often they stick a phrase or word in almost every sentence.
For some...it's people that get interviewed once in their life. But for others, if you're in a position to be speaking to the press often or are a spokesperson, it would certainly not be a bad thing to have a little coaching and even if it's just a friend videotaping you, watch yourself talk. You'll be surprised what you see yourself doing.