. >> when tim conway came on, his goal in life was to destroy harvey. nd new dentist with his very first patient. >> we used to have a pool back stage, not as to whether harvey was going to break up, but how far he could get along in the sketch before he broke up. >> novocaine. okay here. take a firm hold of the hypodermic needle. right. >> they never knew what he was going to do. but they knew it was not going to be what they expected. >> when they did the dentist sketch none of that was rehearsed. >> yeah, be right with you. >> poor harvey was helpless. tears coming down. and tim swears that harvey wet his pants during that sketch. >> i don't know why that worked so well. watching two actors break character and just crack each other up should not be as entertaining, but somehow when it's tim conway and harvey korman doing it, i could watch that stuff forever. >> i just thought if we have fun, the audience will. we're going to go out there and do what we do best, and it worked. >> you can plan it and write it and rehearse it. but you hope for some magic

conway, bbc news. football commentator tim vickery is in rio de janeiro, in brazil.hnology will work. it is a very bold move, maybe too bold. remember that when var was first introduced, many people thought it would be a panacea, it would solve all problems. wherever it's been introduced, we are seeing an element of rejection. 47% of the players in germany don't want it. they have seen it in operation. they're not happy at all. in terms of the world cup, this leaves us with two problems. one is short—term. is everyone ready for this? is the system ready, are the referees ready, are the fans ready, are the players ready? i think the answer in many cases may have to be no. there is also a longer term, more conceptual problem in that this introduction of var is an attempt to introduce precision in an environment where that may not be possible. so many decisions are marginal in football and precision is difficult. secondly, is there really an interest in having precision? so many people involved in football don't want precision. it is in the interests of coaches to have