Foriegners use this approach a lot. But if you are a local tradesman why would you 'hide' behind these charachters when potential custies could see and hear you. If you feel the need to do video, just get a camera and a tripod and some balls.
you could buy a camera and do them yourself. but why not do both.
I see this being used for gimmick items like.....
'click video to see this week special offer'
or
'do you have snow salt on your carpet? click video for advice'
then you can make a specific video and have it embedded on your home page in 5mins.
then next week you spend another 5mins making another special offer video, each time you are putting fresh material on your website (which I'm told google likes to see)