What Greg’s doing, I perfected back in high school.  I would get the number of a girl I liked from a mutual friend, call, let it ring once, get freaked out, then hung up.  I would then slowly build my courage to two rings, then three, but never four.  My heart would’ve exploded on four.  In the off chance she happened to pick up the phone by the third ring, I shat my pants.  Yea, total scrub.  But you live and learn, the freaky anonymous phone caller is totally not the way to go.