Bukkit

Here are a list of particle effects you can use:

BIG_EXPLODE
BLOCK_CRACK
BLOCK_DUST
BUBBLES
CLOUD
CRITICALS
ENCHANT_CRITS
ENCHANTS
ENDER
EXPLODE
FLAME
FIREWORKS
FOOTSTEP
HAPPY
HEARTS
ITEM_CRACK
ITEM_TAKE
INVIS_SWIRL
LARGE_EXPLODE
LARGE_SMOKE
LAVA_SPARK
LAVA
MOB_APPEARANCE
NOTES
REDSTONE_DUST
SLIME
SMOKE
SNOW
SNOWBALL
SPLASH
SUSPEND
SWIRL
WHITE_SWIRL
THUNDERCLOUD
TOWN_AURA
VOID
WATER_SPLASH
WATER
WATER_DROP
WATER_WAKE
WITCH_MAGIC