I have a Bianchi Project 3. It's a 92 with a lugged steel frame. Not much of a Riv-alike since it's got a sloping top tube and a unicrown fork, but I like it.

Closest thing to a Rivendell in our garage is a late 80's Univega. Lugged chromoloy frame with a very relaxed geometry, long chain stains, Shimano 600 components, and two toned-paint. The lugs on the fork even have little cutouts. The foam handle bar grips kind of kill the look though I spent $75 on it.