You must be born again?

I have been to hear both Tony Campolo and Dave Tomlinson recently and they have set me thinking about what Jesus taught. Dave would have us believe that it is all about following the way of Jesus; going on a journey with Christ; that the light of Christ is in all men; we are all on a journey; Jesus did not preach any theology per se, i.e. nothing that we have to believe to be saved! Tony too points us to the words of Jesus, to the Red Letters. His line is "What would happen if we took the words of Jesus seriously", i.e. rather than basing our beliefs on Pauline theology in the epistles. Dave was keen to point to the words of Jesus, except that he didn't for instance refer to passages like "You must be born again". That's what set me thinking. To be born is to come into a world, unseen before, with no understanding and everything to be learned from scratch. Is that what Jesus meant? Start over; wipe the slate; "forget the former things"; "behold I make all things new". As I say elsewhere, as you get older, as a Christian, you tend to get more tolerant and less dogmatic. I am uncomfortable with the predigested evangelical "gospel" which is the good news that you're all going to hell unless you believe what we believe! That's Good News?!!!!!!!!!!!!! Is it feasible that people can be born again without hearing about Jesus? Is the Spirit of God capable of changing people without hearing a preacher? When Jesus said "It is finished", did he mean that he had dealt with sin, once and for all, or was there small print? If people must be born again in order to stay out of hell for eternity, why aren't the 1000's of Christians in this country leaving the pews behind to go tell people?