If they have come with the intent, then a fade between each question to make it look pretty does not seem all that bad. This being said, I am assuming that it is a link to a questionnaire that they wish to answer, and have prepared/saved time for. In which case, you may as well make it fancy, but remember, we are busy people (when we are not writing answers on forums ;-) if the fade or transition is too slow it is likely they will get bored and go back to the television. Of course, if urgency is being issued out to your users 'answer by xx/xx/xx to receive 50% off' for example, this may not be an issue.
The best questionnaires I have seen online are the ones that get it out of the way fast. You see the answer, start typing, hit return and the current question swipes out left when the new one enters from the right. These are slick and rememberable. "I wish all questionnaires were that easy" was my response. Sure beats having to click into each individual text box! I think you should ask yourself, do I want this to be remembered because I am awesome at front-end, and it is fancy as hell - or do I want it to be remembered because that was the easiest questionnaire the user will have ever done.