Burst open a mist of fuel, that covers the target, then it ignites into a HUGE COOL *** FIREBALL...
here is an animation gif of it here:
http://www.fas.org/man/dod-101/sys/dumb/faeanim.gif

http://www.fas.org/man/dod-101/sys/dumb/fae.htm
Or Napalm? Another Fuel bomb type....

That would RULE....THAT would be REALITY
You can even SPRAY NAPALM!!

You could make the individual point of view turn black and then make the death animation people turning to a crisp....black charred corpse!
OR! How about MINE BOMBS...Bombs that lay MINES!!!! ANTI PERSONELL AND/OR ANTI TANK!!!
http://www.fas.org/man/dod-101/sys/dumb/cbu-89.htm
CBU-89 Gator Mine

OR!!!
SENSOR FUSED BOMB








