The Celtics have a ton of players that can shoot but aren't great at creating their own offense (Avery Bradley, Jason Terry, Brandon Bass, even KG a little). Crawford is the guy you want when the shot click is winding down and the C's can no longer kick it around the perimeter. He's like a very, very poor man's Kobe Bryant. He's great at BS shots. And he's pretty good against a tough defensive lineup where it's hard to get shots.