Celtics trade '99 first round draft pick and Andrew DeClercq for Vitaly Potapenko.
That first round draft pick was given to The Cavs and was number 8 overall. They used it on Andre Miller, but left on the board was Shawn Marion, Jason Terry, James Posey, AK47, Ron Artest, and Corey Magette.
This is a pretty bad decision but it's kindof a hindsight thing, On one hand Vitaly was picked 12th overall, on the otherhand he'd hadn't shown that much to defend that.