In addition to Balls, and Beam type attacks, I'm proposing wave's, which are basically attack's which cause area effect damage without an explosion or knockback.
Secondary attack form of:
Kamehameha (Goku, Gohan, Cell, Krillin)
Galit Gun (Vegeta, Cell)
Masenko (Picollo, Gohan)
Mouth Blast (Buu)...