HA, I've got a bogus cashiers check for 3500.00 from the same guy around here someplace. Had him going for about 3 weeks.
Another good one is to let them send you the check, then tell them it never arrived or was stolen because you can't leave things on the porch in your neighborhood.
Then they've gone through the hassle of forging the check, sending it to you, getting excited because they think they've found another chump, the the bitter realization that it is they, in fact, who are chumped.