i'm stephen cole. all those interested in new technology and the internet. in april 2000, the bbc decided to explore the exciting new world of the dot—com bubble! and, in a spectacular piece of timing, click online went on air just as it burst. as online dog walkers and wine tasting services tumbled around our ears, the programme went looking for the next big thing. i told you i could do it. we didn't always find it... 0h—oh, i forgot to change the batteries! ..but every so often, we backed a winner. gmail is a free email service. twitter.com is as simple as it gets. it's called bluetooth. the device, with some never—before—seen features, has been billed as nothing short of revolutionary. we have met all sorts of amazing characters on our travels. it's me, mario! and i mean all sorts. la, la, la, la, la—la! hey! we pushed tech to its limits. 0h! sometimes we pushed it too far. we are going to build an artificial intelligence. and sometimes, it pushed back. they came here on a sort of gold rush, promise