I like the dufex technology featured on a number of those Barry Sanders cards. That was a nice contribution by Pinnacle, some other Pinnacle ideas were not so great however.
The Flair Legacy Collection were awesome parallels. Perhaps the coolest parallel numbered to 99 or 100 - EVER. These below are from 1998:
The Flair Legacy Collection were awesome parallels. Perhaps the coolest parallel numbered to 99 or 100 - EVER. These below are from 1998: