Fragment 3-BD looks like it's coming pretty close (within 10k miles):
http://neo.jpl.nasa.gov/cgi-bin/neo_ca?type=NEO;hmax=all;tlim=recent_future;dmax=0.1AU;max_rows=200;action=Display%20Table;show=1&sort=dist_min&sdir=ASC
0.04 lunar distance
Err, I mean, as near as 10k miles.