Question about bursts.

[Krump985]

If I cast a burst (2) centered in the center of a 5x5 grid, all the people in the grid get hurt. I got this, but... what if a dragon or some other 'huge' creature is there, will the burst effect it only one time, or several times for each square that got hit?

 

[jeffh]

Once. Read the "Target" entries for your burst powers; in the great majority of cases, you target each creature in the area, and in no case do you target each square occupied by a creature.

 

[Hypersmurf]

If I cast a burst (2) centered in the center of a 5x5 grid, all the people in the grid get hurt. I got this, but... what if a dragon or some other 'huge' creature is there, will the burst effect it only one time, or several times for each square that got hit?

This is spelled out explicitly for Close Attack and for Area Attack on PHB p271.

-Hyp.