And I'll add one more question: Who has done it with enough consistency that they have/will be warranted to be mentioned in the same sentence as Horry/Fisher.
Well as a Kings fan, I've seen Garcia has hit at least 3 game winning baskets this year, although now he likely won't even be in the game at the end (with the crucial shot going to Martin or Bibby ..or Artest

Another player that has been given the ball and come through on game deciding possessions is Hedo Turkoglu. He's having a standout year and it has been highlighted with his clutch baskets.
I've also watched a couple Hawks games where the final basket goes to Joe Johnson. He only came through on 1 of the 3 I watched.
As for the second question, I can't really think of anyone that has been really clutch that is a non-star off the top of my head. I was hoping someone else could help.