More people have contacted CC HQ about Jim G than about yours truly! (Thank you Vic for keeping the faith)
Here's your report, you ingrates!
Jim G is alive and well. The Chicago marathon of '07 was the hottest on record, and eventually shut down. One guy died and many were hospitalized. Jim G was at mile 18 or so (at a glacial, but wise, pace) when they shut down his part of the race.
Afterwards, exhausted, he was ill and received an IV from a zealous nurse. He was ill again and stayed the night.