I remember the first Y-bike I saw too. It had a nude carbon 'Y' and a polished Aluminium rear with XT bits, a Judy XC and a fox Alps 5 rear shock. I was smiltten. A Trek Rep brought it around to the bike shop I was working in to show off (great job to get you through university working in a bike shop... busy over the summer when you've got time off and then when you're studying when it is colder they don't need you around so much).
My bike is a second generation one with a lighter rear triangle and a re-shaped carbon front to strengthen the shock mount where many of the first ones failed... not quite as nice on the eye as the first ones.
I've not seen another of these in the flesh for a long while, though they are around. There is a really informative website and Yahoo group for those interested in these bikes here: www.users.bigpond.com/cool386/trek/trek.htm
that is run by a bloke here in Australia. If you want to know more about these bikes it is worth a look. He owns 5 of these bikes I think!
[size=67]90 Trek 1420
91 Gary Fisher Supercaliber
94 Diamond Back Axis
98 Norco Sasquatch
02 LeMond Zurich
06 Pinarello Galileo