Worst Bears "pick" ever was the First round pick given up for Rick Mirer.
The guy never had a passer rating above 70 for the four years before the trade and it was 56 the year before the trade! He played in 7 games, starting 3, the next year for the Bears. He was 2 -5 in those games throwing 0TD's and 6 INT's with a grand total of 420 yards passing and a total passer rating of 37!!!
They didn't even use a 1st rounder on him as an unproven rookie, they gave up a 1st for an already proven NFL bust, gave him a 3 yr 11 MIL contract, and released him after 7 games as a Bear. I think this may be the worst move in the history of the NFL.
The only competition is the H Walker raping and the Ditka/R Williams fiasco, but at least those guys were either good or thought to be good. Mire was a shit QB his whole career and the Bears gave a 1 for him!!!!