I bought a used bike (Norco Bigfoot c. 1991) recently. It has a full Shimano Exage 300LX gruppo with Biopace crankset. The BB needs replacing, cables and brake pads are original, and I wrestled with the seatpost for a couple of hours before convincing it to move. Unfortunately job situation is up in the air right now, so the bike is hanging from a hook in the garage until funds permit some TLC. I'll have to wait until then to determine whether or not I like the Biopace.

Pic from the online classified ad: