Understanding basic Bitcoin Transactions: the scriptPubKey.addresses array
tx: 60a20bd93aa49ab4b28d514ec10b06e1829ce6818ec06cd3aabd013ebcdc4bb1

OP_1
04cc71eb[...cut...]0d348ac4 // this is pubkey of 1AJbsFZ64EpEfS5UAjAfcUG8pH8Jn3rn1F
0461cbdc[...cut...]c15342af // this is pubkey of 1A8JiWcwvpY7tAopUkSnGuEYHmzGYfZPiq
OP_2
OP_CHECKMULTISIG


to spend this transaction one should sign it with one-of-two privkeys



tx: 274f8be3b7b9b1a220285f5f71f61e2691dd04df9d69bb02a8b3b85f91fb1857

OP_1
0351efb6[...cut...]77da78 // this is public key of 1NdB761LmTmrJixxp93nz7pEiCx5cKPW44
00f2b781[...cut...]93569e // this is not a public key!
OP_2
OP_CHECKMULTISIG




tx: 4b72a223007eab8a951d43edc171befeabc7b5dca4213770c88e09ba5b936e17

You can read about this transaction here: 
http://www.righto.com/2014/02/ascii-bernanke-wikileaks-photographs.html [16]