sha256(666) leads to 1Az4F5yC19WZt5XMuc6x11xJM81VcJyHQA which in 2014 received 666 satoshi. Hell, that's funny.
again reviving an old topic google brought me here

i run my javascript that iam devloping
SHA256 (6)
1JmrvhqYP4EpSRAhuKkn2NtmPvPNCxA9Kd
SHA256 (66)
1NDx9Sw74RYP5EA6iqgb52C97ncswCy2kp
SHA256 (666)
1Az4F5yC19WZt5XMuc6x11xJM81VcJyHQA